I like him alot!!! But it's difficult... help me!!!?

I really like this guy and long story short, Im in college at a big univeristy, I didnt know much about sororities so I just joined one that I liked w/out knowing the reputation. Anyways, this guy is from out of state and he's in a fraternity that is old row and "doesn't ociate with us" which is stupid because we are a good sorority. Anyways, last week I went back to his frat house and slept over. We didn't have (I dont do that). And I thought he probably just thought of me as a piece of ***. But tonight I saw him and talked to him, and he gave me a ride back to my place (he didn't ask about going to his place). Anyways, he's really cool and I am pretty and cool enough for him but the fact that his frat "doesnt ociate with us" pisses me off. Anyways, should I text him right now and say "thanks for the ride! Maybe ill see you tomorrow" or just not text him?