The Wallflower’s Choice by Rose Pearson

As Lady Prudence battles her past and the Marquess of Childers grapples with unexpected feelings, will they be able to find love despite their secrets?

Lady Prudence has a past. Hiding as a wallflower, she is reluctant when her parents urge her to find a match, quite certain that she is undeserving. An unexpected meeting finds her considering a match to a most unscrupulous gentleman, fearing that it is the only chance she has for matrimony… though her eyes continually seek out another gentleman entirely.
Horrified when his dear friend states that he must find a bride to produce the required heir, James, the Marquess of Childers, suggests a match of convenience simply so that both he and Lord Kingshill can return to their roguish ways. Finding Lady Prudence to be the perfect lady for his quest, he quickly makes the arrangements, only to find the lady affecting his own heart in the most confusing manner! Uncertain about his feelings and all the more uncertain about the match, James must choose whether to face the lady and tell her the truth of his heart or let Lord Kingshill wed her instead.