Suggesting an open relationship sounds like a modern, evolved idea until you’re sitting there with a partner who’s hurt, confused, or secretly agreeing just to keep you.
While a decent portion of people has experienced a consensual non-monogamous relationship (2019 data suggests around 7% of Brits had, and 23% were open to it), it’s definitely not smooth sailing. It’s not that open relationships never work because they can, for the right people at the right time.
However, if you’re pushing for one, and they’re clearly unsure, it’s more than just a personal preference. Instead, it’s a massive emotional gamble. Here’s why encouraging your partner to say yes to something they’re not fully on board with often ends up doing way more harm than good.
1. They might agree just to avoid losing you.
One of the most common (and heartbreaking) outcomes is your partner saying yes because they’re scared of being left. They’ll nod along, pretend they’re fine, tell you they’re open to it. However, inside, they’re panicking. They feel like if they say no, they’re going to lose you completely.
That agreement might look like consent, but it’s not coming from a place of comfort or confidence. Really, it’s coming from fear, and that doesn’t stay hidden for long. It turns into resentment, jealousy, or emotional shut-down down the line.
2. They start feeling like they’re not enough.
Even if you try to frame it positively—“It’s about freedom” or “It has nothing to do with how I feel about you”—what they often hear is, “You alone don’t satisfy me.” That cuts deep, even if you don’t mean it that way, and it’s not something people just bounce back from.
It puts your partner in the impossible position of trying to stay close to someone who’s openly looking for something, or someone, else. It’s a confidence-killer, even for people who seemed secure before the conversation started.
3. It turns love into a competition.
Open relationships require a level of emotional security that not everyone has, and pushing someone into one who’s not built for it tends to bring out the worst. They start comparing themselves to whoever you’re seeing. Are they hotter? Funnier? More exciting?
Even if you reassure them, it’s already in their head. They’re watching your messages, reading between lines, trying to keep up with a version of you they never signed up for. And the worst part? They might not tell you how much it’s messing with them until it’s too late.
4. You end up with more honesty than you can handle.
Source: Unsplash You wanted openness, and now you’ve got it, but it’s raw, and messy, and not flattering. Maybe your partner tries dating someone new too. Maybe they like it. Maybe they connect in ways you didn’t expect. Suddenly, the dynamic flips, and you’re the one feeling threatened.
It’s easy to feel in control when you’re the one initiating the idea. Unfortunately, once it’s in motion, you can’t cherry-pick the outcomes. If you’re not ready for the vulnerability that comes with total transparency, it can absolutely wreck you.
5. One of you always ends up wanting it more than the other.
Source: Unsplash Even in open relationships that start with mutual enthusiasm, things rarely stay perfectly balanced. One person dates more, connects faster, or catches feelings elsewhere, and if one of you only agreed to the whole thing to please the other, the imbalance becomes impossible to ignore.
Suddenly, someone’s always waiting while the other is out. Someone’s getting attention while the other is stuck at home, overthinking. It stops feeling like a shared choice and starts feeling like a painful compromise they never truly wanted to make.
6. It can become an excuse to avoid deeper problems.
Source: Unsplash Sometimes people suggest open relationships because they’re bored, emotionally distant, or feeling unfulfilled, but instead of dealing with those core issues, they try to patch things up by adding new excitement. More connection. More intimacy. More novelty.
Of course, it doesn’t fix the cracks. If anything, it highlights them. You’re layering new partners on top of problems that haven’t been addressed. And eventually, those problems come back louder, except now, there are more people involved, and more feelings on the line.
7. It changes the emotional dynamic, even if no one technically cheats.
Source: Unsplash Just talking about opening things up changes the tone of the relationship. Suddenly, you’re not “us against the world”; you’re co-existing with other potential connections, and that takes up space. Emotional energy gets split, even if you don’t mean it to. Your partner might start filtering what they say. They might get weirdly quiet or overly agreeable just to avoid pushing you further away. The intimacy changes. You don’t feel like a team anymore. Instead, you feel like options.
8. It creates space for emotional affairs to feel justifiable.
Source: Unsplash Even if the open part is meant to be physical only, things get blurry fast. Emotional intimacy with someone new happens slowly: shared playlists, inside jokes, late-night chats. Your partner’s watching this happen, wondering when they stopped being your go-to person.
It’s not always about sex. Emotional closeness is what makes people feel secure, and when that’s being built somewhere else, even if it’s “allowed,” it can still feel like a betrayal, especially if one of you is secretly clinging to the hope that this was just a phase.
9. The person who didn’t want it ends up emotionally checked out.
Source: Unsplash If your partner only said yes to keep you, they’ll probably start detaching without even realising it. It’s a protective thing. They go numb to cope. And by the time you notice, they’re already halfway gone, even if they’re still physically there. It’s not resentment that ends things, it’s emotional vacancy. You opened the door, and instead of growing together, they quietly walked backwards until they weren’t really in it anymore. That kind of distance is hard to come back from.
10. It opens the door to insecurity you can’t undo.
Source: Unsplash Even if your partner seemed okay with it at first, people don’t always realise how deep the insecurities run until the arrangement is already in motion. Suddenly, they’re checking your phone, comparing themselves, needing constant reassurance.
It’s not always about jealousy, but about emotional safety. Once someone starts feeling unsafe in a relationship, that feeling doesn’t just disappear. It lingers, even if you close things back up. The trust doesn’t reset as easily as people think.
11. It can make someone feel like they were never truly loved.
Source: Unsplash If your partner is already insecure, the whole idea of an open relationship can feed a brutal inner narrative: “I was never enough.” It might not be what you meant, but it’s how it lands. And once someone starts believing that, it changes the way they show up both for you, and for themselves.
Rather than being about possessiveness, it’s about worth. When love starts to feel negotiable, conditional, or optional, it stops feeling like love. It starts feeling like a slot they’re filling until something better comes along.
12. It turns communication into emotional landmines.
Open relationships require constant communication, but if you’re not both 100% honest and emotionally equipped, that communication gets messy fast. Suddenly, every chat about plans, feelings, or boundaries becomes a potential argument.
One person wants rules, the other wants freedom. One shares too much detail, the other shuts down. The thing that was meant to be liberating ends up becoming one big emotional admin task, and resentment builds in the silences.
13. They might say yes to stay in your life, but never feel safe again.
Source: Unsplash This is the saddest version. They stay, hoping it’ll bring them closer to you, or at least keep you around. However, deep down, they don’t feel chosen anymore. They feel tolerated or replaced, and once that belief sets in, it changes everything about how they love you. They won’t always say it out loud. They’ll just start fading emotionally, bit by bit, and the closeness you had before will be gone. You won’t get it back without a painful reckoning, and sometimes not at all.
14. It often reveals a relationship that’s already on its last legs.
Here’s the hard truth: if you’re thinking about opening the relationship because you feel disconnected, unfulfilled, or bored, it’s probably already in trouble. The open dynamic doesn’t cause the issues. It just throws a spotlight on ones that were already there. If your connection was strong, open relationships might feel like a choice. However, if you’re reaching for it as a fix? That’s usually the last thread, and once it snaps, it’s hard to pretend things were ever solid in the first place.
