The neighbor wager
(Book)

"Meet River. He used to be the nerd next door...only now he's all grown up, got a sleeve of tattoos, and women seem to like him. A lot. Even Lexi, the girl of River's teenaged dreams, all bubbly sweetness--never noticed him. Until now. There's only one problem. They're not meant for each other. Now it's up to Deanna, the super pragmatic, algorithm-fueled brains behind the new dating app Meetcute to make sure they realize it. River might be certain he knows true love when he sees it, but Deanna knows differently, and the future of her company is riding on it. All she has to do is prove to him that what he's feeling for Lexi isn't love. Not even close. ...even if it means making him fall for Deanna, instead. Challenge accepted."--,Provided by publisher.