The Groom Came Back - Abby Gaines

Typical. It takes Dr. Jack Mitchell eight years to pull himself away from his terribly important career abroad and come home for a divorce. And then he doesn't even know who she is! Sure, Callie Summers - excuse me, Mitchell - was a gawky schoolgirl when Jack rescued her from a nasty family situation. But that's no excuse for the man not to recognize his own wife.
And now the gorgeous neurosurgeon thinks he's going to hightail it out of Tennessee with his final decree in hand. Uh-uh. Callie isn't letting him off quite so easily. Not when she, to her utter dismay, is finding him so irresistible.

Irresistible enough to get him to tie the knot again?