Why does he talk to everyone?

Well, I've been in the EXACT same situation, except I was the guy in this scenario. I liked a girl and I'm really funny so I talked to everyone and people just naturally like to talk to me. I'm a pretty confident person (more like "very" confident), but I just couldn't bring myself to talk to her, because I really liked her. I also couldn't look her right in the eyes, I'd get embarrassed and turn away, but I still really liked her. So I'd do whatever I could, even if it meant talking to her friends, just to be able to look at her, but made sure it wasn't when she was looking back. Anyways, I found out we both liked each other, and we hooked up. So to answer your question, I'd definitely say it isn't a bad thing. If I were you, I'd try to bring up some casual conversation with him and see how he reacts.

First of all that's not bad if its just 2 days
second OMG that's like the same thing that happens to me. if you plugged in my name and his and mine and his 'bff' it would be my exact situation EXACTLY
ppl say he likes me and I like him
so I think he's trying to get close to your friends and talk to them b4 u, you know?
pretty much what he's doing to me ;]