Dancing in My Nuddy-Pants by Louise Rennison

Georgia thought she had put her "red-bottomosity" to rest when she finally chose Robbie the Sex God over Dave the Laugh. Anyway, Dave the Laugh is now dating her friend Ellen (which didn't stop Georgia from snogging him at a party...)

But when Dave breaks up with Ellen and the Sex God is never around, Georgia doesn't know what to do! As always, in Georgia's life, nothing ever turns out as planned!