What should I do

Okay so there is this boy who I’ve became friends with 3 weeks ago and we’ve been talking literally everyday and he is slowly open ring up to me and I think I might like him which is something I shouldn’t because when I like someone I think about them all day besides my books and I want myself to stop but I like talking with him it puts me in a good mood and I feel my emotions towards him building should I just let it happen or try and keep myself from liking him