Treasured Kiss by Virna DePaul

MMA trainer Alder Hanson heads to Las Vegas ready to party hard; instead, he finds himself bored out of his mind. Then he runs into Dara Brennan, a beautiful brunette with sea green eyes who pleads with him to fill in as a stripper for her friend’s bachelorette party. Unable to resist her, Alder negotiates his fee: a kiss. Only Alder finds one kiss isn’t nearly enough. When given the opportunity to train Dara’s MMA fighter cousin, Alder jumps at the chance—it means more time with Dara, and a chance to win the greatest prize of his life: her heart.