i know a girl from my friends , i added her on fb and i started messaging " thank u 4 the accept or sth like that " i used to message her on fb and talk about university and natural things , until that one day i asked her on fb how is she doing ? , and she didn't respond to me , that was a week ago , now i want to message her and say " sorry but i don't want to be creepy or annoying , but do you mind if i attend a class with you in the univ. " ,, is that a good behavior from me ? am i creepy ? shall i send her this msg ?