Lily has been there for Warren when no one else was. She was hired to babysit for Warren and his wife but kept coming around after his wife passed away. She knew that if she wasn't there to take care of him, no one else would.
Warren came to have feelings for Lily that he knew he shouldn't have. He kept it to himself and just watched her from a distance. As she matured, so did his excitement. He especially liked to watch her as she sunbathed topless. It didn't take long for his feelings to turn into lust.
One afternoon, he was watching her by the pool and became lost in his thoughts. The next thing he knew, she was standing right next to him. Busted, he retreated to his office where she joined him. It turned out, he wasn't the only one lusting in the house.