Regency Four Series by Virginia Taylor

An apple, a temptress, and a man named Eden. When an unwanted duke offers for Della Hayden, she decides to use easy-to-tease Lord Eden Thornton, her handsome, adorable neighbor, as her fake betrothed. Eden, a mathematical genius, loves Della, and doesn’t mind being seen as an idiot by the musically talented debutante. Although he has always allowed her to run spirals around him, he decides to take a final stand... moreAn apple, a temptress, and a man named Eden. When an unwanted duke offers for Della Hayden, she decides to use easy-to-tease Lord Eden Thornton, her handsome, adorable neighbor, as her fake betrothed. Eden, a mathematical genius, loves Della, and doesn’t mind being seen as an idiot by the musically talented debutante. Although he has always allowed her to run spirals around him, he decides to take a final stand. Win her or lose her, he has to show her the consequences of her thoughtless actions. Will Della finally see him as he is, or will he allow her sinfully delectable ways to ruin her reputation? less

An indecent proposal, a willing lady, a cautious lord.When Lady Hebe Hampton strolls back into society, an extremely rich widow, she can now choose from a long line of fortune hunters to begin the family she craves. Although she had never loved anyone other than Lord Alexander Rydale, the inflexible viscount has always scorned her unrestrained behaviour.