What do I do if my cousin actually likes me???

I’m turning 18soon, he’s a year older. We’ve always been close but I don’t really know what kinda ‘close’ we are to him. I never really looked or took the way my cousin actted towards me as an ACTUAL attraction. He’s not very social, only with people in our family (and even then he’s shy) or with people in his religion that he meets at meetings or bible gatherings. He’s never really had real relationship with a girl.

He’s really close with me… Ex: he’ll hug me any chance he gets, holds me, kisses my cheek, tries to hold my hand, puts his arm around me, slaps my ass, tells me I’m pretty or hot or likes my outfit.

We hang out when we can. He’ll ask me if I wanna hang out so we’ll go somewhere or to the movies. We talked last night and he asked what my plans were for the rest of the break, I told him nm so he asked of we could hang out. I said sure what yea wanna do? He told me we should go to the movies to see Avatar. So I said “sounds good, but I thought you’ve seen it already?” and he said “yeah but it was good and it means I’ll get to spend time with you.” the rest of it went like this: Me- awh, well sounds like fun him- great it’s a date XD me- uhm Kay, well what kinda date we talkin about? Him- what ever kinda date you want it to be me- I see what are we doing on this ‘date’? Him- well I’ll take you to this new Japanese resturaunt I want to go to for a nice romantic dinner the to a late show. Me- uhm ok.

I really don’t know what to think. My boyfriend was talking to me while I was talking to my cousin and laughed and told me my cousin on hitting on me and LIKES me.

I dint know what to do… It’s not like I can just come out and ask my cousin if he ‘likes’ me… If he doesn’t it’ll be akward and he may think I like him:s or if he doesn’t then again it’ll be akward cause I won’t know how exactly I should handle it… Well I mean I would talk to him about it honestly…

Hmmm. Please help, thanks.