It looks as though Lady Gaga may be moving on from ex-fiancé Christian Carino — and no, it’s not with Bradley Cooper. The Lady Gaga and Dan Horton dating rumors were fueled by his ex-wife’s Instagram on Tuesday, in which she seemed to throw a barb at Gaga herself.  While any such romantic involvement has yet to be confirmed, a few clues certainly point toward Gaga and Horton being a new pair.