No Boys Allowed! — Marilyn Levinson

When her dad moves away to marry another woman, Cassie Landauer decides that there will be no boys allowed in her house -- not even her best friend, Bobby. But then her mom invites Great Uncle Harry to stay with them for a few months. For Cassie, that's the last straw. Great Uncle Harry takes over Cassie's bedroom, treats her like a little kid, and is always hanging around the house.

Even worse, Cassie hasn't talked to her dad since he left, and lately all she and Bobby do is argue. She's sick and tired of it! It's time to boycott boys. But how can she do that when one of them is living in her house?

All boys can't be that bad...can they?