Shood i block him on aim?

I told my bestfriend a year ago about this guy i liked that we were verry close (like bbfff) & now they going out ? idkk since they going out he dousent talk to me no more, he said i used to be hes best bst friiend & we used to talk all nite on the phone, :( idkk whats going on ! shood i block him on aim?