Your girlfriend's panties

You look inside confused as you see the package only seems to contain a pair of panties. You pick them up. They definitely appear to be used which is concerning enough, but they also seem very familiar. Then, it hits you. These are your girlfriend, Molly's panties! You are certain of it. But it strikes you as unusual. It isn't like Molly to do something so... risqué and eccentric. Your girlfriend is the most vanilla person you know. You and her have sex once a week at most, and it's never anything kinky. Why would Molly send you her wet panties?

You look around for a note in the package, but instead you find a much bigger surprise. Inside is a picture of Molly...naked...riding a huge dick. Your heart sinks, your cheeks flush red, your ears get hot, and...your dick gets hard? You try and shake it off, but are mesmerized by the picture. How could this be? No way she cheated on you. That's not like her at all, right? She always said you were the only one for her. Was that a lie? You have to discover the truth. Beg her to stay with you if necessary. Whatever it takes to win her back.