hello idk what this situation is please help

I am 17(F) and i like a guy and i am confused idk he is 17(M) or maybe 18 we go to the same coaching centre for our upcoming 12th boards to give mock tests. at first we used to not talk and he is a vey studious guy topper and all. we used to not talk much just hi, hello, will you come tommorow, how was preboards, and stuff.

one day i sat beside him it was quite awkward. he was playing with my things and when maam was teaching he was touching my knees with his so i shifted places. But recently from republic day

we are talking quite very much. republic day is celebrated greatly in my school so after that i went to my coaching centre to celebrate the same. we had food to which he was helping me because i was wearing a white saree and at any moment i would have fell or dropped food on it. he clicked my pictures with his some great samsung phone. then the group which i study with we were talking about stuff and somewhere where we started talking about our exs and he was very interested to know about my ex. then i told him about my ex and then i said i am single he was shocked to know that btw. i asked for his id he said it was deactivated. he sent my pictures on my number and we had a small talk, a day later he sent the same and we again had small talk. i had my farewell recently and i was sharing pictures of mine on WhatsApp status and he replied to some of them and we had small talks again and again. many many days ago i overheard him telling my bestfriend saying

that he likes a girl and he has texted her first but then this idk. somedays ago i saw him talking to someone over phone and smiling idk who it was. maybe he is just being nice, maybe he is just trying to be friendly and maybe i am just overthinking but he doesn't behave the same with other girls in my class. my older brother suggested to confront but i wont because i dont want to fuck this up but this thingy just bugs me everyday. i aint even dropping hints or clearing things out so idk. i have no idea what is happening but whatever happens i'll take action in april.