At Last — Susan Vaughan

Maid of honor Andie Devlin owes her life to her brother Thomas and his bride Cleo, and the least she can do is make sure their wedding is perfect. A former wild child, Andie now keeps men at a distance. But Devlin Security Force's sexiest operative Mike Pagano seems set on spending the wedding weekend at her side. Andie longs to yield to the attraction that's been sizzling between them for months, but fears that this straight-arrow former Marine will judge her for her past. Just when she's ready to take a chance on him, she learns the real reason he's stuck to her like glue -- her brother charged him with protecting her.
Mike Pagano loves his DSF job -- except when it forces him to lie to Andie. Yes, he wants to keep her safe from the art theft ring suspected of planning an attack during the wedding. More than that, he admires her for rising above her past, and he wants her in his arms and his bed. Then Andie confronts him with what she's overheard. Too late, he realizes he should have trusted her with the truth. Now he must protect her only from a distance, unaware a gang member has infiltrated the wedding.
Mike and DSF must act fast to find the threat ... but they may have a secret weapon of their own -- Andie.