Wyatt's Wager. Cowboys of Cauldron Valley, #6

Wyatt Cauldron has a gift. He has never-not once in his life-lost a wager. When his brothers and cousins begin getting married, he's happy to accept their bets he'll wind up hitched as well, since he knows that will never happen. Because there's only one woman in the world he can imagine marrying, but as his best friend's little sister, she's completely off-limits. Artemis "Artie" Weston has had a crush on her brother's best friend for as long as she can remember.
But Wyatt has made it clear he has no intention of settling down.ever, with anyone. So not seeing herself marrying anyone but him, she's thrown herself into her career as a vet tech and vowed to forget how good a particular green-eyed cowboy makes her feel. That is, right up until the phone rings, and Wyatt's on the other end asking her for a date. When his best friend offers him a wager Wyatt can't turn down, he jumps at the chance to spend time with Artie, and dating her is just as wonderful as he could have imagined. But sooner or later, she's going to learn about her brother's bet, and Wyatt knows that will be when their hearts are both going to be hurt. Maybe, for once, it would have been better to lose this particular wager.