Star1: I'd say that's sort of like an ex coming back. Lol. Anyone from your past returning for something is them coming back. I think the reason some of us have exes that constantly come back is because we had a crap ton of karmic lessons to get from it. Perhaps you don't have those karmic lessons and better for you cause 9 times out of 10 even when an ex comes back years later, it still doesn't work and usually for the same reasons it didn't work the first time so now we just wasted MORE time on that person lol. It's a catch 22 really. :/
But these guys weren't exes, they were friends or casual chats that wanted to get into bed with me and it wasn't going anywhere, haha. True exes I never have had come back. In my experience, the more drama and toxicity in the relationship, the less they come back. It's like in the end there's too much water under the bridge that it's completely done. I always thought that my ex before this one would resurface as he was a narc and came around when it suited him and didn't want me to move on, but didn't care for or want any relationship with me. Over a year he would contact me on and off trying to use me, and in the end I got fed up and walked away. He didn't come after me and I really couldn't care anymore.. He did me a favour!
I think it's different for everyone. One friend of mine seems to have all her exes come back to her, other friends (like me) never did, but I agree on your last part.. Usually exes don't come back for genuine reasons, lol. When people and readers write on here to let go of the POI and he'll come back, is the ex I'm speaking about. Not guys who keep trying it on with you on and off over time. They're just desperate men lol.