last semester there was a girl in my class. i never talked to her before dont even think she seen me in the class before because we were sitting at the other side of the room as each other. but one day on facebook i seen her on it and messaged her asking her about a exam coming up but she never replied back. now this semester shes in my class again and shes in my group and ill say a joke and she will laugh and i always catch her looking at me. i would talk to her after class but she always goes in a direction that leads outside which i would have no reason to go that way..i have no idea if she remembers that i messaged her on facebook or not so should i add her as a friend and then messege her later or not cause i don't want to do it and her be all like wtf in class.