Demi Lovato Is Dating a UFC Fighter Demi Lovato has reportedly been dating former UFC fighter Luke Rockhold for the past few months. Meanwhile, Lovato admits she had an easier time distancing herself from the Disney image (as opposed to Jonas) because of her stint in rehab. ?For me, the transition was a little bit easier because I didn?t have to do anything to break out of the Disney mold. It?s a lot easier when you just go to rehab,? she told the Calgary Herald.