HELP! Huge Girl Problem, PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!?

So there is this girl that I like, but don't know and have no common cles. On friday I bumped into her in the hall and she looked at me, I said sorry. Later that day she looked at me when we ped by each other again. So, today after school She was talking to friends and I was like "Hey, you look familiar but I don't know your name?" and she was like "me?" then she smiled a little and said "Angela." I said "Mine's Jared." However, I think she heard but don't know because her friends were giggling and it was loud. One of her friends is in my Biology cl. Also, one of her friends yealled out "She's Angela (last name), facebook her!" Should I add her as a friend? Did I do all right in the situation? Or did they say that and giggle because I seemed creepy? Please help! Thanks So much!