They want you to prove it

"Prove it."

You look up and stammer. "W-what?"

The redheaded girl meets your gaze with an intense look and a smirk. "Clearly you don't want us to call anyone over because you don't want even more attention drawn to your current state. However, I don't think my and my friend are convinced. You could still be in need of help." The dark-haired girl catches on and smiles. "She's right. Who knows what kind of trouble a cute thing like you could get into if we don't make sure to investigate?" Your heart pounds in your chest. Why does this keep happening to you? Why did it take no time at all for you to succumb to submission? Your dick twitches. Have you always been like this, you just never noticed?

Either way, you're at their mercy. If they find someone then there's no way your secret stays safe. Maybe if you comply they'll let you go without asking any further questions.

"What do you want me to do?" You say meekly, looking back and forth between them. They look at each other with a wicked glance.