The Pinkie Pact (A Best Friend’s Brother College Romance) (DC College Duet Book 1) by Jenna Fiore

When a bold girl meets an inexperienced law student, sparks fly in this enemies-to-friends-to-lovers college romance.

Desperate for a fresh start, Sky makes a pact with her new roommate Kara to change their lives for the better. When she meets Kara's hot brother, however, her new life gets a whole lot more complicated.

But this is it for Sky... her last chance at the college experience. And this time, she's determined to get it right. Well, hopefully.