I agree with what everyone's saying - it's just the wrong people. My personal examples:
Started a quilt for every boyfriend. Finished one for the one that's now DH (you saw that one, the Metroid quilt). The rest never were finished for the intended and eventually were finished, long after the relationship ended, and given to others. They're not cursed or jinxed or anything. I was just dating ... jerks, to use your word. I was with the wrong guys, and the quilts were just me trying to make something special for a jerk, who didn't deserve it.
Started a quilt for a business's partner's son. He and I had a falling out, where he took $3K of my money and stopped talking to me. On the list of life lessons. I'm finishing the quilt for my old boss's son. I quit the job 6 months ago, but I know this family will value my quilt and I'm happy to finish it for them. Original recipient, or rather his father, was a jerk and it was an unhealthy relationship that I was in.
So just be glad those people are out of your life and know that people will be moving into your life who are more deserving of you, your time, your love, and your quilts. Hang in there!