ex-love interest

I was helping my ex- love intrest with taking a fee things out of his truck, and we went to his house to drop it off. I went to the bathroom for a sec and sat down, and all he kept doing was trying to be close to me and caress my arms and touch my neck. I pushed him away and told him, I'm faithful to my current boyfriend and that it was time for me to go. Why do guys always want a women once she's moved on?