First, in my experience, girls are much less inclined to cheat on their mates than guys...and they are huge flirts. also, (kind of a stupid question..but...) how attractive is ur boyfriend?...would she even be REALLY attracted to him?
you may be worried about nothing.
However...if there is something to worry about, then leave him, because guys are assholes, and they are made through evolution to mate with more than one female....aaannyway....
here is the conclusion to my advice...
become a lesbian...girls are hotter anyway.
