Why does it feel like a double betrayal?

A friend from your past finds you and wants a permanent relationship with you but it turns out the friend is a “player” and a liar…the traits you really don’t expect from an old friend who used to be so nice to you. The friend seems to have a personality problem and doesn't treat you very well…and you’re confused, upset and you feel betrayed. You decide to cut the friend off - and it hurts. So how do you deal with the never-ending thoughts of losing an old friend who you fell in love with? Many people say to 'move on' and those are two words that are easy to say and hard to do.