Ask about the couple

You start playing with her clit while she keeps moving her hips slightly; not enough to risk you slipping out of her creampied pussy, but she's still twitching and crushing around your wilting cock.

"That couple over there," you say, "The one that's been watching us,"

"The whole time?" your girlfriend's eyes go wide.

"The whole fucking time," you say with a wide grin. Her pussy practically convulses on your cock. "Ooooh, you like being watched," you say quickly.

"Fuck yeah I do...never knew....mmmm, baby...." she purred and her pussy heated up to almost boiling. "Should have done this years ago," she said again, her hips bucking harder than they had been. Your fingers speed up in the circles they're making on her clit.

"That couple. You want to fuck them?" you ask. Her pussy answers; of course she does.

"Well, I don't know..." she teases.

"No?" you say and push your hips up to hers. The iron hasn't left your cock yet, but you're definitely being careful to stay inside her tight, soaked box without drawing too much more attention.