This Must Be Love by Tui T. Sutherland

The stage is set for misunderstandings, magic, and mayhem! ready to wow audiences as the perfect Juliet in Athenwood High's spring play. Unless they give the part to her best friend . . . a believer in true love who's waiting for her soul mate to appear. She's worried she might have to wait forever until she meets . . . the mysterious new guy. Helena is sure it's fate, but Hermia thinks something's fishy. It seems the only one who knows the truth about him is . . . Hermia's best-friend-turned-secret-love-interest. He's smart, adorable and, like a typical guy, absolutely clueless that Hermia is head-over-heels crushing on him! Or is he?