Why do guys come back after a long no contact period?

I have had a few very bad breakups where the person had made it clear that they don’t want to hang out again. Then about a year or two later they try to contact me to check on me and one of them asked about a bad experience in college? I don’t get it. Do exes do this often? They don’t want to talk to you and then they just have a change of kind? I didn’t go back to either of these exes

Why do guys come back after a long no contact period?
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