Her Forever Billionaire by Natalie Anderson

Billionaire Jack Greene goes from winter to winter and woman to woman, chasing the thrills of his pro snowboarding career. He has zero intention of ever settling down—he’s only in town to finish up physical rehab—when the sexiest pixie of a woman nearly kills him.
Kelsi Reid’s boss had overruled her objections and sent her for a spa day, but her already high stress levels go stratospheric when she almost runs over the hottest man on the planet!
She’s so shaken the handsome stranger somehow ends up behind the wheel and the already hot afternoon gets even steamier when her takes her to the beach. Suddenly there’s some particularly personal pampering going on…
But, weeks later, Jack’s back and it turns out their true accident wasn’t the near miss with the car at all, but Kelsi’s unexpected pregnancy!

Previously published as ‘Walk on the Wild Side’.