You know what, if your boyfriend's "flirting" (let's put in a context that he's flirting) with another girl and happen that the girl entertains him, you can't blame the girl entirely. It is both their wrongs. The guy, knowing that he's attached, he shouldn't go around betraying the girlfriend's trust. Well just his girlfriend trusts him that he won't cheat on her doesn't mean he should take advantage on the trust she has given him. He should prove to the girl that he will never hurt her and cheat on her.
As for the girl, knowing that the guy is attached, she should KEEP AWAY. It's like, the guy started off wrecking his relationship unintentionally and the girl, leading him on, adds on to wrecking of the relationship even worse.
This goes likewise for girls flirting around while being in a relationship.
I just don't get it. I'm sure everyone decides on being in a relationship for a reason, yeah? Like probably both have long term goals - to settle down. There should be more to a relationship than just going physical, shouldn't there? And why flirt when you are in a relationship? Don't you ALREADY have your boy/girlfriend you could flirt with?
Oh well. Heartbreakers.