Whats going through his head?

Lol first of all, ignore my avatars name I girl. Okay I'm not getting into all the details, but me and this guy live in the same house. We're both around the same age. We sleep in the same bed every night, but we're just friends. Sometimes I have feelings for him and sometimes I don't. But I get actually dizzy or mad when I see him with his gf. Idk if hes attracted to me or not. Im a pretty girl, not to be conceited, but idk if hes into me. Sometimes when we're sober he'll put his arm around me or tickle me or stuff like that. But when we're drunk it's a whole different story. He snuggles up next to me and holds me while we're laying down. We trade each other a lot. It's either really ual or realy affectionate, but not when we're sober. What's going through his head?