What do you do if you have a boyfriend and you are in love with his best friend who knows and flirts with you and has a girlfriend?
Tell your boyfriend about it.
You be honest with your self and your "boyfriend" and end the
relationship. Then the other guy needs to do the same thing if he
feels the same way about you. Flirting is a game people play. I
wouldn't put myself out their for the other guy until you know that
he will step up to the plate and break up with his girl first.
Either way, you will have less hassles in life if you are just up
front and honest...
this probs means your boyfriends best-friend is untrustworthy if he
is flirting with you behind your boyfriend's back. So do u really
want an untrustworthy boyfriend?