Harmless Obsession by Mia Barrett

Aline Iversen has a problem. Her longtime crush, a college professor she’s pined over for years has finally asked her out, but she’s got no experience with men–no real experience, if you know what I mean.
Fortunately for her, she meets Stuart Watson. He’s not her type, their companies are working on a joint venture and he might be an inappropriate choice, but he’ll do for one night. After all, she only needs one night to learn some tricks to wow the man of her dreams and hopefully win his heart.
Stuart delivers. Aline is impressed, swept off her feet, but she can’t let a little attraction stand in the way of her longtime wish to be with the man of her dreams–or can she?
Stuart is in love. He knows someone like Aline only comes around once in a lifetime and he’s not going to let her flakiness and schoolgirl fantasy stand in the way of destiny.
One way or another, he’s keeping Aline for himself.