She was already famous when she had that boyfriend. And Rob didn't became a good boyfriend either. In fact, he filed a lawsuit against Gaga for $30.5 million because he claimed that Gaga owes her a money because of the contract they signed. But Rob later dropped the lawsuit but people don't know whether Rob just simply dropped it or Gaga payed him the million dollars. There was also a rumor that Rob sued Gaga just because their relationship wasn't working anymore. I think after Rob and her broke up, Luc and her got back but they broke again. Luc was her on and off boyfriend..