Do you think he's trying to make me jealous or what?

Sorry for the long question. Anyways I think my friend likes me maybe. I see him Friday nights at bible study. Well anyway last week when i got there he wouldn't talk to me at 1st. Then a little while later he was going to go to McDonald's (it's like right next door to our church) and he asked if anyone wanted to come with him so i said i'd go. Then he asks me "why'd you come with me?" so i said because I was bored. Then he's like "oh I thought u might want something." so he ended up buying me a milkshake. But like almost the whole night he was talking to this other girl. But he had put his hat on me and I wore it the whole night and then he paid for my dinner cause our whole group goes after bible study. So then this week before study we are sitting on the couch next to each other. Our other friend Preston brought some cookies and he put them on the table. Then my crush randomly goes "come on boo lets get some cookies." It was like he made a nickname for me and it accidentally slipped out because he doesn't normally call me that. Then like the whole night he was talking to the same girl as before. Then I was riding with him to dinner and he said "so Sarah I've been trying to think of a nickname for you that I can call you." And then during dinner he somewhat talked to me mostly he was talking to the other girl. But it was kinda confusing cause during dinner he started to play with my hand. Also he paid for my dinner again. He might sound like a player but he's not like that he's actually a sweet guy and doesn't flirt with like every girl. So was he trying to make me jealous or what.