What are this guys feelings torwards me? Does he like me a lot or just kind of?

It sounds like Nick likes to just use women for , but he actually likes you and doesn't want to use you. Its possible for a man to have feelings for a woman while simultaneously wanting to nail everything that moves. These guys are not boyfriend material, and you don't sound like a girl who enjoys one-night-stands. It is not worth waiting for him to grow up and mellow out, as he may never decide to settle down.