weird relationship with friend! Help! Need advice!

[GoodandBadenergies]

ok so i have become very good friends with this guy. I am pretty attracted to him. I don't know if hes gay, bi straight, or whatever. He doesnt know if i am either. He often calls me and wants me to come over and hang out like everyday, like its a big part of his life. He told me once "i really like you alot" (in my mind he just likes me as a friend). He also has me try on his clothes and he said my butt looked really good in his jeans. He had me turn around twice so he could see! lol. He doesnt really maintain eyecontact with me. He always looks away. Also, when my arm is touching his or something, he doesnt pull away. I bent down to pick something up and he said "oh yeah suck my dick! oh yeah that felt good" and he made the motion... I made a snotty comment to him and he said "shut that mouth or i'll put my dick in it!" and "are you ready to suck my dick yet!". I am usually oblivious to this kind of thing and i dont know if he is serious or not. He wants me to come over like all the time. Do you think the feeling of attraction i have for him is mutual? How should i act on it? We are very close friends and i wouldn't want to damage our relationship.