Matching the Marquess by Darcy Burke

Benjamin Nash, Marquess of Creslow, must marry, for he is the last of the family line. Desirous of a business arrangement instead of a love match, he hires a matchmaker, only to learn she’s the widow he nearly seduced during a house party. Though attraction still simmers between them, he agrees to keep their relationship professional.
After the death of her philandering husband left her a pauper, Rebecca Sweet finds financial hope as a matchmaker. Engaged with her first real client, she’s stymied by his requirement that love is not allowed—and by the fact that she can’t stop thinking of his kisses.
But when they seek to find his bride at her hometown’s matchmaking festival, she must face the guilt of her past. The marquess’s surprising support makes her wonder if she could take a second chance on love. Too bad he’s only interested in a casual affair. She needs to find him a bride before she loses her heart forever.