You are fucking retarded.

One bird in the hand is better than two birds in the bush. You were supposed to be done with Jill all those months ago, and you instead continued to chase after her EVEN AFTER GETTING A NEW GF. You messed up your relationship going after somebody that already has a boyfriend. You aren't a prospect, you're a shoulder to cry on. An idiot slave.

Kick her out of your life and move on. She shouldn't drag you down with her own problems.