It's the second time I go out and game a girl that got boyfriend (for real) and takes a big part of the night to know about it.

Last one, I either didn't interpret her moves correctly or she is just looking for the right moment to hook up or something. At the beginning of the night.when we were talking, she would get very close to me, then I move around then end up sitting next to her. She would also let me kino a bit. Then she went to washroom and sat on the other side of the table, took it as a sign of rejection, but she still haven't said a word about having a boyfriend, so during the night, get aside her again and kino, and she still talk very close to me and let me kino, but then she move a little bit away (rejection again) then her boyfriend appeared within the next minutes (at the end of the night). She never told me anything about him. She was with a friend who also had a boyfriend joining around the same moment, when they leaved, her friend and both boyfriend said me good bye, but the girl kinda skip this by going away while I was talking to her friend. I could have join her to say good bye, but I don't think it was the right thing to do.

Am I doing something wrong? Trick to not let this happen again?