I'm so jealous as to how open you all are and how flirting doesn't affect you at all.
My GF is very "friendly", she says she is not, but I see it and everyone else that she comes in contact with... Some things she has done before has really hurt me and I dont think I could ever forget or forgive her, even though she did not cheat, her flirting has made me think of her as a totally different person.