Does he like me as a friend or more?

My and this boy have been friends now for about 10 months almost 11. A few months after we met and became friends people used to tease us about how we looked good together and that we should go out. At the time I didn't like him in that way what so ever and he didn't really pay much attention to me that suggested he liked me even just a tiny bit. Then since about Februrary this year i began to get feelings for him and at the moment I am confused as to whether he likes me because he's been playfully teasing me and stuff. So here's the deal: he is always winding me up and teasing me (everyone always comments about how we are always having a go at each other), he pushes me, he grabbed my behind for a dare, touched my chestal areas (its sounds very pervy but i didnt let him get away with it), whenever he talks to me he always smiles, i catch him looking at me quite often, when he makes a joke he looks at me, he sits next to me even though he doesn't have to, he calls me a hippo and ugly but its playful he doesnt mean it hurtfully, he tries to trip me up, he slaps my legs and he pours drinks over me. I can't ask him face to face if he likes me or ask my friends to find out because he wouldnt tell me and it would be so awkward and we'd never be the same again. I'd just like an opinion from the outside. Please no dumb unwanted comments. I'd appreciate some good answers and why you think what you do. Thanks a lot :D