Cowboy Seal Daddy by Laura Marie Altom

The engagement arrangement.

After his divorce, cowboy–turned–Navy SEAL Wayne Brustanovitch swore he'd never remarry. Now he needs a wife – and fast – in order to fulfil his ailing father's final wishes. Wayne has a plan, but for it to work, he'll need his pregnant friend Paisley to agree to a make–believe marriage!

Paisley Carter knows her hunky neighbour's idea is a bad one, but as she and Wayne play pretend at his parents' Arizona ranch, the line between ruse and reality begins to blur. Can Wayne and Paisley resist falling for each other for real?