Rose just got an invitation to her ex’s wedding, complete with a hand-written note from the woman he cheated with. “I know you don’t have anyone special, but maybe you can bring a second cousin or something.”

Rose has rebuilt her life, playing keyboard in an alternative band, so it burns that they’re still trying to one-up her. Her bandmates suggest the perfect revenge: go and bring a date, a head-turner who will show the bride and groom that Rose is thriving.

Enter the perfect fake boyfriend, jazz pianist Declan Hatcher. Back in high school, the bride had a massive crush on him. Better still, he hates the bride for how she bullied his sister. Unfortunately, Declan also has a history with Rose. In eleventh grade, Declan shot Rose down as “quintessentially not his type.”

The longer they pretend at the relationship, though, the more Declan realizes that actually, Rose is quintessentially his type. Rose is feeling the attraction too, but after all that humiliation, it seems safer to fake the harmony than to compose a whole new love song.