Would a guy avoid being alone with a girl he has a crush on/what should I do about him he's super-confusing?

Anonymous
basically I really like this guy a ton and he's definitely shown signs that he likes me back. we flirt and joke around and make fun of each other all the time and we get along really well. he lets me hit him, touch him, etc. playfully without resisting at all. we make eye contact a lot and for way longer than normal people should and it feels super-intense.

so the other day we were gonna go pick up lunch we'd ordered for our group and he really wanted me to come along too (there was gonna be more people going). then things changed I guess, because no-one else wanted to go along to pick it up, and suddenly he just wanted to go alone in his car and he clearly didn't want me to come along anymore. (it wasn't in a rude way, but yeah.)

he also gets weird, embarrassed, or quiet when I take things too far and say something too, um, filthy/dirty towards him when we joke around, but he doesn't mind it at all when other people say stuff like that. (sometimes he turn really red when I do stuff like that too, or when someone makes a suggestive comment about me and him. one day one of our friends said she was gonna say something about me and him that was gonna make him blush, and he told her it was best not to say it because when he does that it's 'because it's something true.')

so ummmm yeah. I have no idea what to do about him. I can't tell if he's reserved/shy about his feelings or if he only likes me as a friend. I really wanna be with him and do bad things with him for real you guys. :|

thanks so much in advance for any advice!

-tiff x

Updates
+1 y
we work together, so that the reason he didn't want us to go alone together to get everyone's lunch last week because other people might start rumors.
Updates
+1 y
we've known each other for six months now at work but we have mutual friends as well. I'm 20 years old and I moved to the usa from germany when I was 17 so I don't have a lot of friends and I've never had a real boyfriend before, so I don't have much experience with this kinda thing.
Would a guy avoid being alone with a girl he has a crush on/what should I do about him he's super-confusing?
2 Opinion