The Natural History of Us — Rachel Harris

One class assignment. One second chance at love. The school player is all in. Now he needs to win back the sweet commitment girl who's forever owned his heart.
 
Justin Carter has a secret. He's not the total player Fairfield Academy believes him to be. Not really. In fact, he used to be a one-woman guy...and his feelings for her never went away. Too bad he broke her heart three years ago and made sure to ruin any chance she'd ever forgive him. 

Peyton Williams is a liar. She pretends to be whole, counting down the days until graduation and helping her parents at the family ranch. But the truth is, she's done everything she can to get over Justin, and salvation is just around the corner. With graduation one short month away, she'll soon break free from the painful memories and start her life fresh. Of course, she has to get through working with him on one last assignment first.  

For Justin, nothing ever felt as right as being with Peyton, and now that fate's given him a shot at redemption, he's determined to make the most of it. And for Peyton...well, Justin Carter has always been her kryptonite.