Boomerang — E.M. Denning

Eli Cooper and Violet Holt haven't gotten along well in the year their parents have been married, so it's better that they don't see each other often. After an averted disaster, sparks fly and now Violet can't get Eli off her mind. Violet only has to avoid him for thirty more days, then she'll be safely back at college and can focus her energy on her studies, but Eli isn't so easily ignored. Eventually, passion flares and they both give into temptation. Only one question remains when it's over: What do you do when the one person you can't get over is the one person you're not supposed to be with?