I need advise

So i like this kid A lot. We went to the movies and we held hands and stuff. He said he liked me too and i got really excited and we always talked. Its been 2 weeks since he said he liked me. And the past two weeks were amazing and unforgettable. But now we don't talk anymore and during school he kinda flirts with my friend while im sitting right there. He still claims that he likes me and i like him a lot but im so confused.

what do i do ?