Fuck her (cowgirl)

You answer her by reaching down and undoing your swim trunks, freeing your aching cock. "Fuck," she whispers, finally seeing your whole girth. Unable to wait any longer, she pulls her bikini bottoms to the side, allowing you to line your cock up with her exposed pussy.

Grace sits down on it, sliding down with ease; she's soaked. She doesn't waste any more time on warming up and starts riding you hard. She presses her forehead against yours and moans into your face as she fucks you. "God, I've wanted this for so long," she says, her voice strained from pleasure.

"Worth the wait," is all you're able to get out in response, with what her aggressive riding is currently doing to your brain. Her moans are starting to get louder and what little of your brain still has blood is worrying that the others are going to hear if she doesn't get quieter. But you're not the one controlling the tempo here.

You reach and grab her tits through her bikini top. She notices this and - without breaking her rhythm - she yanks the thing off herself, freeing her tits. They jiggle right in front of your eyes as she continues to ride you. You grab one roughly, just like everything else that's happening right now.

She grabs your face with both her hands to brace herself and pulls you in for another deep kiss. Making out with Grace while she rides you might be the hottest thing you've ever experience in your entire life and you're doing your best to drink in every second of bliss.

As she continues to ride you like an unbroken horse, you feel yourself quickly approaching the brink. You could just let yourself finish, or ask her to slow down or change positions to drag this out more. Then again, you're feeling as pent up as she was, so maybe you'd rather just cum here and now.