Is he just being friendly?

we work together,and he always smiles at me like a huge smile, which makes me smile. but i mean like all the time even from across the room i catch him looking at me alot. we had a good conversation, and hes always getting me to do special jobs for him.it seems like he goes out of his way to bump into me. hes a genuanly nice guy, his personality is AMAZING. and hes so nice. he does talk to me alot, and does silly thing towards me. but i mean i get this from alot of guys and i really dont want to take it the wrong way. is he just being himself, or is he flirtig? i've been told i could be a model so im kinda pretty. (not being up myself, coz i dont actually see it thanks anyway