He's flirting or likes me??? Can''t find out?

I have known him since my junior yr in high school he was a senior then. Now he is a freshman in college. I am a senior. I am Sikh Indian girl. He is Pakistani Muslim boy. He was in my class junior yr. But now he is in college. I send him a friend request on facebook. I liked his 2 pics on facebook and he liked my whole picture album?I asked him why did u accepted me to your list. I am your friend right??? He said yeah. I asked him why don't u add more girls he just said that he does not need that many girls? Whenever he posts something on his wall I click like it. When I'm on facebook I like his pics and the places he went to. I am the only Indian girl who is from his school and were in the same class too but we never talked.....we basically were not friends then..... we become friends on facebook. He does have girl friends on facebook about 3 american . But he rarely knows them. There is one girl who always likes his status, pics, places on his wall. I dont like his status everyday abt like in 10 to 20 days I go to his wall and like it. But he chats with me like a 1 or 2 hrs I will ask him questions and he will reply back. He does not ask me. I don't think he's shy because he talks alot when he was in high school with boys not girls? Or because he has more friends that are boys???.I will be going to his college in 3 months.