You promised her an orgasm

Jess's hand continues to rub gently, even as two new customers walk by. She pretends to be looking at the dessert menu, and does a fine job of masking her real intent. As the two people pass, you lean forward so she can hear you whisper about a girl slightly taller than she is across the room. That particular woman, you notice is wearing a bikini that is slightly larger than the one she'd been wearing earlier.

“You could have been wearing your bikini,” you tease her. Jess looks over and you hear a slight whimper as she becomes even more turned on. “I imagine it'd be harder to hide your hand teasing you,” you say, and Jess nods.

“So much harder,” she's able to breathe. “I'd have to be more careful, barely brushing myself,” she mumbles. “With the dress, I feel like I can hide,” she says. “Except from you.” she adds, and you feel a wave of arousal wash over you. Without much fanfare, Jess pulls away the neckline of the dress to give you a quick view of her right breast. “They're still hard from when you sucked on them and I wanted to show you,” she tells you. She gently covers her exposed tit. Jess is still working her excited pussy over until the waiter comes back an takes your order for an appetizer. Feeling fancy, you order the grilled mushrooms, hoping there's enough time for them to cook that your girlfriend can cum after they arrive. As the waiter leaves, Jess's hand moves down quickly enough that you glance around to see if anyone noticed.

When you look at Jess, she grins, using her free hand again to flash you a breast. Jess glances around before covering up, but continues rubbing. “My nipples are so hard,” she whispers. “And I'm already soaking wet” she adds. “I hope you're happy,” she says, smiling. “On the bright side, I'll be good and ready when you fuck me later,” she whispers, and you realize how horny she is. She sits up, grinning at you as she continues to work to get herself off. “So I'm going to cum while you're having grilled mushrooms on a tropical island,” she tells you. “Because you told me too,” she says and then slowly works herself over. You nod sternly at her when the waiter appears and makes his way to your table with the food. She sits up, both hands in her lap as the waiter delivers the food, and you realize as you seem some gentle movement at her left shoulder that she is toying with her pussy even as the waiter sts up the table for your appetizer. As soon as he is done, she pulls her hand up and grips a fork.

“Enjoy,” the waiter says, and his face betrays no indication he has seen Jess playing with her pussy beneath the table. Jess sighs as he leaves and leans back slightly. You both steel yourself as Jess whimpers, looking at you directly until the orgasm forces her eyes shut. It's obviously a powerful one, and she lets her hand drop the fork to grip the side of the table as she leans forward. A small whimper turns into a quiet moan as she finishes, leaning back after what must have been a whole minute. She sighs deeply as she picks her fork up, though you can see her hand shaking. She glances at you and says “I came,” as she picks up a mushroom and begins eating the appetizer.