I think you earned the right to keep that guitar. Paid for by your heart.

Honey, it seems to me that you might be planning when he shows up, calls or emails. You might have crossed the line into obsession. It happens all the time. Maybe you should just stop thinking about him and move on. He was a mistake, a lesson that needed to be learned. There are a lot of nice men out there who would treat you the way you deserve but you won't find them if your mind and heart are still waiting for this jerk. And, he is a jerk to have treated you this way.