Your wife’s younger sister, Brynna, just broke up with her boyfriend and had to move out of his place. She found the perfect apartment, but it will not be available until August. Your wife asks you if Brynna can stay in the guest bedroom until then. You agree.
Everything is going ok, but Brynna dresses so sexy. What a tease! It does not help that your wife is working extra shifts at the hospital and is too tired for sex. It is only a couple of months and summer always flies by so fast. You just need to be a very good boy, but Brynna is such a flirt and a tease.
Then it happens. It is the first 90 degree day of the summer. You come home from work. You are looking forward to relaxing with an ice cold beer. You go upstairs to take a shower, and you walk by the guest room. There is Brynna, naked, and fingering her pussy. She invites you into the room. Her sexy naked body and her seductive voice are too tempting for you to resist.
You have the most beautiful face/smile I have ever seen.