Her best friend and her best friend's boyfriend

Sarah's best friend Holly had a really great boyfriend, Nick, but they both had a lot of trouble getting their parents out of the house long enough to get some real alone time, so she often had to listen to Holly complaining about how they couldn't have sex. If Sarah told Holly that she had free reign over a large house, and that she would let her bring her boyfriend over, Holly would be thrilled. She tried not to think about how she'd like Nick to "thank" her. He was, of course, off limits, but she couldn't keep herself from thinking about it, wishing she were Holly.