What My Girlfriend Doesn't Know by Sonya Sones
High school freshman Robin Murphy has been the class loser nearly forever, until Sophie Stein becomes his girlfriend. Then Sophie becomes ostracized as well, which makes Robin feel simultaneously bad for Sophie and happy that he isn't alone anymore.
In the midst of Robin's romance with Sophie, he joins a college art class and is attracted to classmate Tessa, who doesn't realize that Robin is a high school kid...or a loser.
The blank-verse story is a sequel to What My Mother Doesn't Know (which is told from Sophie's viewpoint) but stands strongly on its own. Robin's longing for companionship and intimacy may be "too much information" for younger or more sensitive readers. No cussing, plenty of kissing, and heaps of unfulfilled sexual desire--as appropriate for a book told from the point of view of a 14-year-old boy. Recommended for ages 14 to adult.