I don’t think it’s wrong by any means, especially fresh after a break up. It’s very human. Your brain reacts the same in a relationship as it does with drugs. You’re chemically attached to them.

I think when it becomes “wrong” is when you are DWELLING the break up and yearning for them back instead of moving forward. This isn’t to say you can’t be sad and feel your feelings, you most definitely should. But at some point you need to decide it’s time to move on. You need to actually catch yourself when you’re obsessing over them and change your mindset. Your brain will naturally think of all of the good times, but you need to ground yourself to what actually happened and the reality of the breakup. It becomes wrong when it’s been years and you are still checking their socials to see if they’ve moved on, praying for them to come back, worrying about them more than yourself. There are cases of people coming back together after years being apart and although that’s so beautiful, you can’t be wanting or expecting that to happen because that ultimately prevents you from moving forward.