Should I try to stop my ex from dating someone new?
Short answer: No. Interfering, warning the new person, or leaning on mutual friends to intervene reads as controlling and pushes your ex closer to whoever you're trying to separate them from. New relationships right after a breakup are often short-lived on their own. Stay out of it and focus on your own process so you're the stable option if it ends.
Your ex is seeing someone new, or you suspect they are, and every instinct is telling you to do something about it. Warn the new person, say something through a mutual friend, make it obvious you’re not okay with it. That instinct is worth resisting.
I’m Benny Lichtenwalner, breakup coach and author of How to Get Your Ex Back, and this comes up constantly with clients watching an ex move on, or appear to. The advice is consistent: don’t interfere, and here’s why that’s not just a nicer option, it’s the more effective one.
Why interference backfires
Any move you make to block, compete with, or comment on your ex’s new relationship gets experienced as control, even when your intentions feel reasonable to you. That triggers a defensive reaction, and your ex ends up defending the very relationship you were trying to undermine. You become the pressure they’re avoiding instead of the person they might come back to.
| What it feels like doing | What it actually does |
|---|---|
| Warning the new person | Makes you look controlling, protects nothing |
| Getting a mutual friend to say something | Turns a friend into a messenger, usually gets back to your ex |
| Showing you’re upset or jealous | Signals you still care in a way that reads as pressure |
| Staying quiet and out of it | Keeps you the calm, stable option if the relationship ends |
New relationships that form quickly after a breakup often don’t last. Familiarity, incompatibility, and the simple fact of a new relationship being new all tend to do the work of ending it, without you needing to do anything. Every time it hits friction on its own, your ex has a reason to think of you again, and that only holds if you haven’t made yourself the source of stress in the meantime.
What to actually do
- Don’t resist what you can’t control. If your ex is moving toward someone else, fighting it just confirms to them that leaving was the right call.
- Let the other relationship run its course. You don’t need to help it end. Most of the time, it does that on its own.
- Stay out of third-party involvement. If a friend or family member wants to get involved, tell them it’s between your ex and the new person, and leave it there.
- Hold your own position. Keep living your life so that if the new relationship does hit trouble, there’s a stable version of you to come back to.
- If they do reach back out, meet it calmly. Don’t use it to score points or to extract an apology for what happened. Just take the reconnection at face value.
What not to do
Don’t try to stop your ex from seeing someone, going somewhere, or doing something with someone else, even if you feel justified. Decide whether you’re trying to get them back or trying to make them pay for leaving. Those are different goals, and mixing them costs you both.
Don’t reach out to people in your ex’s orbit to get back in good graces or to plead your case. Their opinion of you isn’t the thing standing between you and your ex.
Don’t announce that you’re moving on or dating other people and then watch for a reaction. If it’s true, live it. If it’s performance aimed at a response, it reads as exactly that.
Don’t engage a third party who’s already inserting themselves into the situation. Validating their interference, or adding your own, makes their meddling your problem too.
What this looks like in practice
A composite of situations I’ve coached, details changed. One client found out an ex had started seeing someone within weeks of the breakup and wanted to reach out to that person directly. Holding back instead, staying quiet and focused on their own routine, the new relationship fell apart within two months on its own. The ex reached out not long after, with no prompting.
Another client’s ex stayed in a new relationship much longer, close to a year, and it never fell apart the way the client had assumed it would. The work in that case wasn’t waiting for a collapse that might not come. It was building a life solid enough that the outcome, whatever it turned out to be, wasn’t the only thing holding that client together.
Neither case involved interference, and that’s the point. The version of you that isn’t trying to manage the new relationship from the outside is also the version most likely to be worth coming back to, whether or not that ever happens.
Related questions
What if the new person is clearly wrong for my ex?
That's still not your call to make from the outside, and saying so almost never lands the way you intend. If it's genuinely a bad fit, your ex will find that out through living it, not through you pointing it out. Pointing it out just makes you the person attacking their choice.
Should I unfollow or block my ex once they start dating someone new?
Do what actually protects your own state. Muting removes the temptation to watch without making a loud statement. Blocking sends a clearer signal and is the right call if seeing their updates is wrecking you. Neither is about punishing them, both are about managing what you're exposed to.
Is it okay to tell mutual friends how I feel about the new relationship?
Venting to a friend for your own sake is different from asking that friend to say something to your ex or to the new person on your behalf. The first is normal. The second turns a friend into a messenger for interference, and it usually gets back to your ex in a way that costs you.
How long do most rebounds actually last?
There's no fixed number, but many rebound relationships fade within a few months once the initial familiarity and distraction wear off. That timeline isn't a guarantee, and it isn't something you should be counting down while checking their social media either.
What should I focus on instead of the new relationship?
Your own life: work, friends, your own routine, your own dating life if you're ready for one. The version of you that's genuinely occupied with something other than monitoring your ex is also the version they'd actually want to come back to if things do end.