Old Enough by Haley Jakobson

Savannah Henry is almost the person she wants to be, or at least she's getting closer. It's the second semester of her sophomore year. She's finally come out as bisexual, is making friends with the other queers in her dorm, and has just about recovered from her disastrous first queer 'situationship.' She is cautiously optimistic that her life is about to begin.
 
But when she learns that her best friend from childhood, Izzie, has gotten engaged, Savannah's life is sent into a tailspin. Things with Izzie haven't been the same since what happened between Savannah and Izzie's older brother when they were sixteen. Now, with the wedding around the corner, Savannah is pulled back into a history she had just barely begun to heal from. To make things more complicated? Savannah is definitely in love with her classmate Wes-sweet, long-eyelashed, funny Wes and their green backpack-something her college friends Candace and Vera take great pleasure in teasing her about.
 
With a singularly funny, heartfelt voice, OLD ENOUGH explores queer love, community, and what it means to be a survivor. Haley Jakobson has written a love letter to friendship, and an honest depiction of what finding your people can feel like-for better or worse.