Do You Think My New College Male Friend Might Be Gay Or Bi?

Okay, so Im going to college and some of the people going to my college group chat with webcams, kind of like ichat and skype. Well, I’m a guy and met this dude on there going to my college. I’m kind of bi-curious to bi, and I find this guy attractive and cool. Here are some facts about him:
The college were going to is a christian college btw.
-He likes to skate
- Plays videogames, mostly Call of Duty 4
- Had ADHD, not severe, but mild
- didnt have much friends and was nerdy in middle school to high school
- strong christian who goes on missions trips
Stuff he has said to me:
- In a group chat with 2 other girls, i was joking around and said that they werent my friends as a joke, and he said “But I love you..” he was joking i think
- In the same chat, i was explaining how my guy friend invited me to stay over his house a couple days before college begins because im flying there early, and he says “Well, you can stay at my house forever” I think he was kidding on the first two
- We chatted online for 4 hours at one point, and we were talking about what qualities we look for i na girlfriend, and i said how i have a hard time finding girlfriends because theyre not as perfect as me. I was being sarcastic, and he says”Well, if you were a girl……” implying if i was girl hed date me, but i said “huh”, and he said “haha jk”
- And one time in the chat i was afk, and i came back and said “Im back, did u miss me?” and he said “Like a fat kid loves cake.” and i said “Thats the sweetest thing any one has ever said to me” as a joke, and he responded with the face “:P”.
Also, no one was on ichat but he invited me for a one on one video chat, which was kind of weird because were both guys.
He has shown the 2 girls and me in the chatroom himself with his shirt off, and was posing side ways and all that too…
Do u guys think he might havea crush on me, or is bi curious? we talk about girls alot and stuff, i just try to do it to make him jealous, but today wen we talked he was being really passive with me, but i think he was busy playing video games…