I like him a lot but i dont know what to do...please help?

i am a 15 year old girl and he is 16. We met when my friends introduced me to him one day. the next day me and my friends hung out with him. we flirted a lot and by the end i got him to agree to walk me home. We madeout a bit and he promised to walk me home again the next day. The next day we hung out and madeout for an hour. When i saw him again at school we always said hi to each other. the only problem is that i think i got him sick, because i had bronchitis at the time we were making out. I am not sure if he likes me. but like everytime we are together we flirt a lot and he stands really close to me, like the distance that you would be before making out. And after he madeout with me he held my hand and walked me home. No guy has ever held my hand that long, not even my ex bfs.but i aint sure if he is actually into me. He may be the type of guy who makeout with every single girl, i dont know. But he did tell me he isnt like any of my ex bfs who only care about , and in general he like relationships more then hook ups. He has a cellphone but we never exchanged numbers and he has facebook but he doesnt know he has me on his account. i tried sending him a msg but he doesnt recognize me even though my profile picture matches me completely. he is a funny guy who always tells dirty jokes and stuff, but like i dont know if he likes me and i dont know what to do because I really like him. the only problem is, he is my ex bfs friend and my ex bf still likes me even though he dumped me so he doesnt like any guy near me. Please help me!!