Your parents don't trust leaving you home alone, so they asked Lily to come over to watch you. You are immediately focused on her hard nipples. You can pretty much get any girl you want, but not tonight. You will not be fucking Lily, but she will let you jerk off to her. Lily encourages you to jerk off as she plays with her body. You love her perky titties and tiny frame. Maybe after she sees what kind of load you can offer her, she'll come back to fuck you.