How Sex Evolves in Long‑Term Love: Stale to Sizzling Again

For many couples, sexual connection evolves as the relationship matures. What once felt spontaneous and frequent can become rare, routine, or even nonexistent. It’s incredibly common... but that doesn’t mean it has to stay that way. In this post, we’ll walk through the most common sex trends in long-term relationships, explore why they happen, and share what you can do to prevent (or even reverse) an unwanted dry spell.

The Most Common Changes Over Time

Every relationship is beautifully unique, but extensive studies have shown some irrefutable trends that you might relate with.

1. Sex Happens Less

Unsurprisingly, the frequency of sex drops over time in long-term relationships. When couples first fall in love, sex is a frequent and exciting novelty. However, as soon as a few months in, it can become to feel like routine and the excitement of the "new" is gone. A study published in the National Library of Medicine proves the phenomenon... however, they also say that sexual satisfaction is not entirely linked to frequency. Note that sex, as a whole, happens less as of recent years too. Other studies have found that from 2000 to 2018, everybody in all age categories have been reporting less frequent sex (penis in vagina sex specifically). So, it's no wonder we all feel like we're having less sex. And I explore that exact issue in more detail in this blog post that explores just why so many couples stop having sex.

2. Desires don’t Always Align

It's very common to have a HL partner and a LL partner, or Higher Libido and Lower Libido. Libido is, in a nut-shell, sex-drive. Your desire to have sex. A higher Libido means you want it more often / you are hornier. Note that we're not talking about High and Low, because it is only important within your relationship. One of you is likely to have the Higher Libido, while the other has the Lower Libido. It's perfectly natural, and its roots are deep within human hormones and psychology. For now though, know that the disparity between two peoples' Libidos will change over the years, often getting further away. For example, initially you may have both wanted to do it every few days, but eventually that desire changes to one of you wanting it weekly, while the other wants it monthly. And, sadly, in a lot of cases, one partner no longer wants it at all. If a mismatched Libido is affecting your relationship, we've already written an article to help you out.

3. Routine Kills

The UK is a miserable and grey place, but when I read that 1 in 5 couples hadn't had sex in over a year, I was shocked. Unfortunately, even if the numbers aren't as drastic, it goes a long way to showing sex isn't frequent in a lot of couples. The study attributed that dire statistic in-part due to routine. When sex becomes an "every-Friday-evening-before-bed" thing, often involving the same three positions, lasting the same amount of time, and just overall being nearly identical every time... it becomes boring. It becomes a chore. And when it feels like that, it gets replaced with anything else. Do you relate? Is your sex dull and repetitive? Don't fear, it's easily fixed... but we'll explore that further down.

4. Fantasies and Needs Change

As we evolve, so do our preferences and turn-ons. Without open dialogue, partners can miss changes in each other’s desires, leaving both feeling disconnected, unseen, and dissatisfied. If your relationship started with great communication and openness around kinks, chances are your partner still thinks they are your kinks today. Or, if there was never that psychological safety needed to express what you really wanted in bed, then your kinks were never fulfilled (and neither were theirs). When needs are no longer met, sex becomes less desirable, and Libido naturally decreases.

5. The Body and Life Changes

Finally, a no-brainer. People have children. People have jobs. Stress, mortgages, activities, chores, it all stacks up and impacts sexual desire. So does an ageing body... weight gain, wrinkles, and grey hair lead us to feeling less attractive and less confident in bed. Erectile Dysfunction (or ED) and other medical conditions can also have an impact on our bedroom confidence. If this is you, you're not alone - your partner likely feels the same! So, it's no wonder sex frequency drops over time.

Catch and Prevent It from Worsening

The great news is, it's totally fixable! Both if it's actively happening, has happened, or has just started. Many couples maintain a vibrant, evolving sex life for decades! The key is to approach intimacy with curiosity, consistency, and openness.

Make Sex a Conversation

One of the strongest predictors of a satisfying sex life is the ability to talk about it. Don’t wait for problems to surface, and don't bottle it up. When something isn't right, talk about it. Of course, sex conversations are often difficult and awkward, and not every relationship is able to have them (yet). We wrote an article specifically to help couples struggling to talk about sex overcome common barriers. Check it out here! The key concepts revolve around genuinely showing interest in your partner' thoughts and feelings, and seeking to really understand the situation to be able to work towards a shared ideal. As always, a great relationship revolves around fantastic communication - and sex is no exception. If the "talk" is too awkward or uncomfortable, you can use certain methods to make it less awkward. One example might be spending time together with a sex therapist that can help you both explore and share your boundaries, fantasies, and work towards your ideal. Or check out another of our posts that helps partners who want to talk about sex deal with a partner that doesn't want to talk about sex. If a sex therapist also sounds scary (or expensive), there are a number of great sex quizzes out there. A sex quiz will usually allow you both to express your interests and set your boundaries without any need for a conversation, and you can let the outcome do the talking for you. The official Couples Sex Quiz is, in my opinion, the best one out there - for the modest price, you can each get an extremely insightful report that'll provide tips and tricks to satisfying one another the way you each like to be satisfied!

Prioritise Intimate Time

Desire doesn’t always precede action. Believe it or not, many people don’t feel desire until they’re already engaged in something sensual or affectionate. It's called reactive desire (opposite to spontaneous desire). Scheduling sex might sound unromantic, but it can work, especially since both partners are expecting and excited for it. You can imagine, if you don't have sex often, you're less likely to be primed for sex at any given moment and it can take time to mentally prepare for it. That's why teasing throughout the day, cheeky texts and comments and sometimes even more obvious signs can lead to more and better sex! Dr. Cheryl Fraser calls this "Scheduling sensual dates" and we love how she's explained the idea in her article for the Gottman Institute.

Stay Curious, Together

If one of the reasons for a lesser Sex Life is monotony, then trying new and fun things can really light the "I want more sex" spark! This doesn’t have to mean wild experimentation - it can be as simple as asking, “What’s something we’ve never done that you’ve always wanted to try?” An article in The Journal of Sexual Medicine agrees that novel sexual experiences (i.e. trying new things) leads to increased satisfaction. Now, increased satisfaction does not mean (or guarantee) more sex altogether, but if you're both enjoying it more, chances are you'll want it more!

Stay Physically Affectionate

Even when not having sex! Physical touch doesn't always have to be sexual. Hugs and kisses and strokes and holding hands all help couples feel more connected, and for many, feeling connected is super important when it comes to sex!

How to Rebuild Intimacy Once It's Gone

Many couples go through dry spells, and it's perfectly natural. After years (or even decades) together, it's natural to let life get in the way builds up certain walls. What matters is how you respond and we're going to touch on some things you can do to reignite that sexy spark!

Start With Them

If you're feeling low and frustrated and you just want your partner to know how you feel... our top piece advice is to start with them! "when we are quick to anger, we are slow to understand" is one of my favourite quotes is from the movie 'Bullet Train' (with Brad Pitt) and describes what many relationships involve today. If you're feeling angry, or upset, or frustrated, you'll have a wall between you and your partner's side of things. So start by asking them lots of questions to understand their view of sex, and why it's not happening. You might find something fascinating that you can change, which will lead to more or better sex! For this to work, you need to be genuinely curious and interested. You need to leave your own feelings and views at the door, because your mission is to fully understand why they're not into sex at the moment. They may not even consciously know themselves, and that's fine... this isn't a "one conversation" thing... it's a "many chats over many days, weeks, or even months" deal. Every time uncovering more, evaluating progress and working towards the goal of more and better sex! Read our other article to help you with this chat!

Reconnect, Emotionally

An excellent study by the name of 'The associations of intimacy and sexuality in daily life' tracked 134 participants and noticed a direct causation effect between couples that felt emotionally connected, and couples that had higher sexual desire. So, a new method to explore may simply be more quality time together. If you're the higher libido individual, it may increase your partner's libido. Equally, if you are the lower libido individual, you may find that you want to have sex! What can you do? Go for a nice dinner together, go to the movies, or to mini golf... On a budget? Home cooking date night, baking together, a fun indoors couples activity like painting-switch (get two pieces of paper, paint or pens, and a timer - when the timer goes off, say every 5 minutes maybe, you switch). Small activities that you can bond over, and time together. A scientifically proven possible way to increase sexual desire, and thus... sex!

Lead with Emotions and not Blame

There's a lot of power in telling your partner how you feel, and not how they make you feel. When one is blamed, they feel threatened, and that triggers a "fight, flight, or freeze" response. If your partner tries to end the conversation, shuts down, or starts attacking you (verbally... hopefully not physically), then there's a good chance you've triggered that response. It's easy to do, and totally normal - just take a break, and come back to the chat with a different angle sometime in the near future. It's important to go with sentences like "when we don't do X for X, it makes me feel like X", trying to trigger some empathy in your partner. And, better yet, try to invite your partner to do the same - invite them to share how they feel, and why. It's also a good idea to reaffirm things to them so they know they're not being blamed. Sentences like "I know you don't mean to do it" and "I love you so much I want this to work" will ensure they're at ease.

Plan and Re-Evaluate

Finally, you want to be working towards a goal. Hopefully during the conversations you've managed to understand what the root causes are of the decline in amazing sex is, and you've been able to share what you'd like to try / an ideal you'd like to reach. Now it's time for action! It'll take effort to try those new things and break old routines, but making sure you follow through with what was said is important. Even if it doesn't work! Because you'll at least have discovered that something didn't work, and you can try a new tactic. This continuous improvement will require more chats, especially after sex, to know what worked and what didn't. The sex quiz I mentioned earlier has a category called 'Post Sex' that goes over how you each like to communicate about sex, after sex. It might help you both understand how to communicate in a way that works for you both!

Moving Forward, Together!

Some changes happen overnight. This... is not one of those. You may start to notice certain improvements quite quickly, especially if you're having good conversation s together. But to change habits and patterns for years to come requires consistency and continuous improvements. It'll take time to understand what makes you each tick, when you can find good intimate time, and how you both like it. And as your needs and wants evolve with time, it'll take time to find a way to keep on top of those changes. So, notice the changes as they happen, tackle them with great conversations and exciting new things in the bedroom (they don't always have to be kinky or extreme, a subtle change in motion can make a huge difference).