Shotgun Bridegroom by Day Leclaire
The bad boy...
Sam Beaumont was a poor boy from the wrong side of the tracks. Seven years ago he thought he was going to elope with Annie Delacorte. Instead he found himself run out of town.

and the virgin bride!
Sweet and innocent Annie had a very good reason for jilting Sam. But now, Sam is back, and he has the money and the power to get what he wants. And he wants Annie. Only, the whole town is determined to protect her good name and ensure that Sam's seduction attempts don't end in the bedroom--but begin with a wedding!