Reborn as the School Hunk's Cannon-Fodder Boyfriend

[More or less a story about someone who thinks he's transmigrated into a book, but has actually been reborn] [Working title] Bai Haitang never thought he'd end up inside a book. The protagonist has the same name as him and a tall, handsome, rich, popular boyfriend who constantly flirts with him until his knees go weak. And Bai Haitang has transmigrated into the protagonist's body. Bai Haitang falls into deep thought. Since the two of them are destined to break up in the end, maybe he should just turn down the popular guy's advances. And then... Oh, who am I kidding? The popular guy is so handsome, and those abs are so fun to play with~