Should I be?

Ok heres the deal. I have been talkin to this guy since last semester. I wasnt really into but this sememester, Im really feelin him. We spend a lot of time together n i often go over there and spend the nite. Now every time I spend the nite and he has sumthing to do in the morning, he wakes me up and tells me to lock the door when I leave. Now just the other nite, I slept over there and he wakes me up in the morning and tells me that he has sumthing to do @ 8am. So I ask him should I move my car so he could get out. He said no cuz I was leavin when he leaves. I thought that was a lil strange but I wasn't gonna argue cuz its his house but he has never asked me to leave when he leaves. Now I also know his history as a playa and I am tryin to trust him but this incident gives me another reason to think twice. Then he called me on the way back to my room and it still sounded like he was @ home and it was 20 mins past 8! What should I do? Should I play it off like it wasnt nothing or start askin questions?