if he really loved you, he would let go of the responsibilty relationship cause theres no real feelings to it. either you go aways or let him break it off with the other. just never be the third person.
i think you should talk to him about it and ask him to pick either you or the girl he's with now... i know it would be hard to accept if he doesn't pick you.. but at least you got a straight answer instead of guessing..you just have to move on sometimes..
yeah i agree with what everyone's been saying...i don't think you are a bad person but he's definitely not worth it.
