Im 20 and He's ??? what?!?!?

So im in college im a girl and 20 yrs old..im taking a self defense class and well theres a guy or should i say man in my class since day one he caught my attention i noticed him lookin at me and from that day on we inda keep looking at eachother but not saying anything..the thing is he just helps he himself is a purple belt..long story short monday he was helpin me and my partner with a move we were learning then i got the guts to ask how old he was he said he was old i was like ok how old..hes 33 yrs old! well the next day he winked at me idk what that meant cuz he hs never done that..well what i wanted advice on in can he be interested in me? he doesnt know how old i am..and what did that wink mean?? (i smiled when he winked)