Wild Streak by Tiffinie Helmer

Dare Wilde is at loose ends since his twin Ryder becomes engaged to his former high school sweetheart, Gabi Waterman. But then her younger sister Morgan Waterman makes him an offer he doesn’t want to refuse, but knows he should…

Morgan has always fancied Dare. He’s hot and sexy and, per his playboy reputation, knows how to show a woman a good time. When she makes him a proposal—a night of passion with no strings attached to rid her of her unwanted virginity—things really get wild.

But when Dare finds himself falling for Morgan, even though she’s made it perfectly clear she’s interested in nothing serious, he breaks down and calls in his dad for some matchmaking magic. After all, Jack Wilde has already succeeded in matching five of his six siblings. Surely, he can help Dare convince Morgan he really cares for her, and she’s the only woman for him.