Behind His Back — Diane Schwemm

How can she resist?

Fran spent day after day hopelessly crushing on a hot guy at the Art Institute. But when she makes a love connection with cute and funny Toby, her crush is buried away . . . until she meets Toby's brother Marshall--who
happens to be the cutie from the Art Institute! Fran really likes Toby, but her crush on Marshall is getting more and more major by the second--and Marshall seems to feel the same way. . .