My twin sister (your fiance) invites me round to use the shower while mine is being fixed, she needs to go to the shops so leaves me to finish up while you’re still in the house. While looking for something in the cupboards I find her pink hair dye, then get a wild idea. While laughing on the phone to my friend I joke about dying my hair to prank you and make you think I am your fiancé, as our hair colour is the only noticeable difference between the two of us. I raid her clothes drawers and pick something out, using her hair clips and lip gloss to make it as convincing as possible! First I just try to pry some personal info out of you, but one things leads to another and the sisterly prank gets way out of control, as I find out I can’t control myself with you and you have an amazing cock. She returns home after you’ve just covered me in cum, how am I going to explain this?