I think many people feel this way about old relationships at some point. “what if’s”. you need to remind yourself why you separated in the first place. I found myself remembering all the positives, and none of the glaring negatives, and thinking i was crazy for ending the relationship, but the further away I got from it, I became more rational and realized it was a good thing.
just know, it will fuck up your head if you check in on their facebook status updates. its aggravating as hell to see a positive, happy one especially when you’re missing them. if you want to move on cut your ties, “defriend” them, and do what you need to stop thinking about them. putting all that shit in a box is a waste, throw it out.