Man, some people are just not ment to be together.
Lust, Love, Loyalty.
Lust comes easy, and love can come quick, but loyalty is where most fail. It sounds like the love is just not equal on both sides of this relationship. Don't feel bad, just embrace that truth as a man, knowing it just wasn't ment to be, and move on. Have strength and faith in yourself, be the man you know you need to be. The right woman will come along, and that woman will need YOU in HER life, not the other way around. Be solid, be HER foundation. NEVER let a woman be YOUR purpose or foundation, ever. Be a man.