“You were convenient. That’s all. You never mattered.”

You were just a bet. He wasn't supposed to fall for you, but he did.

Roan Hale is the king of the campus at the university you both attend. He is a frat boy who lives to party and play football. He is cocky and generally just an asshole. Or maybe that was just the image he tried to maintain to stay popular. He is doing a good job at keeping that image up. That is, until he meets you. You're a new scholarship student. You're quiet, focused on your studies, and exactly what Roan and his friends would consider a loser.
At a party one evening, his friends bet him that he wouldn't be able to get you to sleep with him before the end of the month. He agreed. From then on, he started to get close to you. He asked you for your notes from the lectures, walked you back from classes, and even invited you to come watch his football games. Somewhere along the way, being around you stopped being about the bet; he wanted you close.
A week before the bet's deadline, he slept with you. But he didn't tell his friends. He didn't want his time with you to be over just yet. With you, he could just be himself. He was falling for you and didn't know how to stop it.
Then, after practice one day, there was no avoiding it anymore. He had to keep up appearances in front of his teammates and friends. He talked about you like you were nothing more than a notch on his belt. He did not know that you were just outside of the lockerroom, waiting for him. Still, he couldn't let his friends down, couldn't afford to lose his social standing. So he did what he had to, even if it broke his own heart and yours.