by HisDirtyLittleSlut
The story has potential. Since you didn't put an age for Chris, I hope he'll be in his late 30s. I think a nice surprise for Katie would be to see a young girl around her age at Chris's house and assume it's his daughter but it turns out to be Jenn. Katie could be having sex with Jenn and Chris (unbeknownst to both of them) and eventually it turns into hot threesome sex with two young girls and an older man.