Hot new kid what to do!!!! sos?

so i started tlking to the hot new kid and we reall get along and i noticed he ate lunch with the really weird kids like the outcast and so while we were tlking i told him that he didnt look like he wanted to sit with them so i told him he can sit with me and my frnd and he smiled and stretched and said "ahhh yeah i'll think about it" he sounded teasy but idk does he really want to or is he being nice idk. also aftr cl when the bell was about to ring i stood up and he did too and he wlkd nxt to me and jst stood nxt to me the whole 5 min like really close and we jst started tlking idkhe's really hot and all girls like him but is he interested in me.....o yah he has a girlfrnd in old school and he said he's not used to girls all over him like thi but i act like i dnt like him but idk what to do n what he's thnking....helppp