Is there trouble in paradise for Lady Gaga
and Taylor Kinney
? And is her ex-beau Luc Carl the cause of it all? According to a new tabloid report ... very possibly. Yes, Gaga and Taylor recently went on a double date with Emmy Rossum
and her BF, but Luc Carl has always held a special place in the singer's heart. A source tells Radar that her fling with actor Kinney, a model/actor who has appeared on The Vampire Diaries
, is cooling off after ...