Good morning.

I'm afraid I have a problem. That of course, is not unusual as it seems everyone comes here for relationship advice.

Anyway.

I am in a long distance relationship of 14 months. This month (hopefully) being out 15th. My girlfriend and I have had many battles concerning our love, and what we feel is right and wrong. We knew we wanted only each other, and we were already making plans for the future. I know this seems like rushing it to most people, but we are quite mature for our young teenage stereotype.
Now, we had what I thought was a fairytale romance for a while... And then I made a mistake, and was surprised that she forgave me. However, she's made many more mistakes since then. Been with other guys, is what I mean, of course...
It's not so simple to just say, "She's not worth it, break up with her." One, first and foremost, are our feelings. Through all this, I can not hate her, or be unforgiving. I can tell her love is strong, and wishes to make things right. She tells me distance is very painful. I understand that, but I thought we've been able to cope with that using role playing online.
Just recently, she's found a guy named Bruce. Now, Bruce is funny, and caring, etc... And she seems to have fallen for him. She's told me, and for weeks now, we've been trying to figure this out. I can sum it up, for those who know the song, that I am the boyfriend that is spoken of in Rihanna's Unfaithful.
She's seems so much happier with him. She talks easier and for hours with him. This alone hurts me to no end. I will admit that I succomb to my emotions. I cry almost everynight from the pain of this confusion -- She claims with all her heart that she loves me more than anything, and I know that. Her feelings aren't unrequited. She is the only one I feel I can love, despite all that's been happening.
She barely talks to me, falls asleep while I am talking to her, and never says she loves me. Yet, I try to end her pain of being torn between two people by breaking up, and she wails and screams, begging me not to go. I know there has to be an easier solution to this.
I've tried to ask if she wants to be with both of us, and that hurts both her and me. As well, she doesn't like the idea.

Coupled with what has happened to me with family life, I've lost my only solace in this girl. All I am asking, friends, is your input on this. Any thing you have to say will be greatly apppreciated. Thank you.