It's not really the "They're close to someone else" entirely, just the fear that I'm not actually close to them at all. People put so much importance on dating, it makes Friendship feel a bit less, even though I don't think it is.
I get what your saying I have been in relationships and when that relationship ends even if its on good terms makes things really awkward and it essentially destroyed a few close friendships which is sad I dont like things to end like that