If you saw him flirting with other girls in front of you, he was being hot and cold with you, and said he wasn't looking for a relationship with you, why were you showing interest and hanging around with him in the first place? Sounds like he showed you exactly who he was from the get go (a player) but instead of saying "no thanks" you went after him hoping he would change. Perhaps this is an opportunity to learn a bit more about yourself, and why you seem to be drawn to the kind of men you say you don't want. Honestly, he didn't lead you on; you led yourself on. You deserve better; don't let yourself be drawn in by guys who aren't interested in you.