Texas Rancher's Vow by Cathy Gillen Thacker

Jen Carson made a promise to herself--no more powerful, controlling husbands. So why is she letting herself be tempted by Matt Briscoe, surely the most alpha male in Laramie County? She only agreed to stay at the Triple B to create a series of commemorative bronze plaques for Matt's father. Not end up sharing taboo kisses with six-feet-four inches of irresistible cowboy. A cowboy who also happens to be her client's son. Talk about mixing pleasure with business!

And now Jen's suddenly the reluctant keeper of a Briscoe family secret. Which thrusts her into an even more heated conflict with Matt. No matter how strong her feelings for the studly rancher, Jen has so many good reasons to keep him from becoming a permanent part of her life. Too bad her heart won't listen to her head…