Some people never want to a relationship to end in such a way as there’s no possibility of ever going back. They’ll do something to make it possible to come back, like leave personal belongings that they have to retrieve, etc. They like to make sure they always have a way in with you, just in case they need to use you as their backup plan. So when they come back weeks, months, or even years later, they’ll just be feeling you out to see if you’re game. It usually happens when their other relationship has ended or is about to. They just hate being alone, so they usually have a few backups they keep on hand to make sure they’ve always got somewhere to go. I didn’t want to accept that the person I loved was like that, but the evidence was overwhelming and finally I had to accept the reality. But I’m not opening the door for them anymore. It’s time to put my best interests first.