What Do You Do When Someone Tells You That Someone Likes You And You Say To That Person That You Think They Like You Then They Get Really Angry At You??

My friend (person A) was talking to me about how my ex boyfriend and friends boyfriend was looking at me heaps and was bugging me. he was also like joking around like making the move on me and stuff while my friend and person A weren't there. But, I was on Skype tonight and i said to him you like me don't you?" and he says no and we have a fight then he blocks me, now I don't know what to do!!