Typically performed by someone who is not
loyal. They will constantly move around looking for the 'next
best thing'.
If you date an overlapper, you need to constant look over your shoulder. It doesn't matter how much you tell them that you love them, they will immediately and without warning start
dating someone else. If they are a coward, they will break up with you and give you a completely different reason for the break up (
e.g. they will
lie and not admit they are breaking up because they found someone else). If they are particularly selfish, they will deny you had a relationship at all.
Steve: So I was just a victim of overlapping!
Joe: She did the same thing to me, why are you surprised? Every relationship of hers ends with overlapping.
Steve: But, I thought I was
special.
Joe: Yeah, she makes everyone feel that
way, until she flushes you down the toilet, and moves onto the next
best thing.