DOES HE LIKE ME???? 10PTS?

this guy who is from Pakistan. I saw him in my junior yr at high school he was a senior then. He was in my class but we never talked. He always looked at me. I just recently chatted with him facebook. I am going to his college. But I feel very nervous when i talk with him online. He always chat with me first on facebook. But I hate this.... whenever he chats with me he goes offline without telling me but he always chat first. When he is chatting with me I always ask him questions and he replys back after like 10 mins?? How can I find out if he likes me??? He starts out saying only Hey to me first.When I am about to sign out. I say I got to go now. He writes like brb or why you signing off to me. We never talked face to face. If he likes me I don't want to break his heart??? He soooooo cute??? I won't see him until september cuz then i start college. I will see him on high school graduation ceremony cuz his sister is my friend and is graduating with me. When he was in my class he only looked at me? I don't want to talk with him in front his family???? I am not asking him facebook. Cuz I really like him. I like to chat with him. I liked his pics and he also like my pics.