This guy recently started talking to me over the phone and keeps flirting with me the whole time even if I don't reciprocate. I confronted him about his girlfriend and he stopped but now he started flirting with me again. Whenever we are in town and bump into each other he is all over me as well. I don't understand why he is doing this if he has a girlfriend. Is he interested in me or does he just want a booty call and an opportunity to cheat on his girlfriend?