Fuck it! Fuck Toby already

You run through your positions a little quickly today. Sex is still on your mind far too much. As your chest rises and falls, you are acutely aware of the movement of your breasts, the stiffness of your nipples. Your hand brushes against them as you move, and you have to stop yourself from sighing slightly. Every part of your body is just turned on, and you have to acknowledge that fact.

You'll be damned if you stoop to masturbating in front of everyone though. But that leaves only one option….

So as you finish up your routine, instead of going to grab a drink of water, you suddenly dart towards Toby's corner of the enclosure. He hasn't finished up yet and is still repetitively tugging up and down the length of his erect member, pre-cum leaking freely from the tip. You've always found male masturbation a little quixotic, maybe because it just seems better when you get to play with the penis.

Which is exactly what you do: before Toby has time to react, you kneel and take him the by the base of his shaft. Your fingers wrap around the thick, hard member, and you recall how much you have enjoyed that girth inside of you. Wasting no time, you pull his hand away and begin stroking.

Toby's eyes widen. "Really?" he asks.

"Oh, I'm just getting started," you reply. Satisfied that he is well on his own way, you decide not to dally. You swing your leg over his, straddling his cock and positioning your opening just above its tip. You lean forward and kiss him, pulling his chest towards yours.

Your bodies thus locked together, it's a simple matter of lowering your wet, eager pussy onto his perfect penis. You slide down the shaft, pre-cum and pussy juices mixing into a perfect natural lubricant that eases your way. The two of you moan in unison, each satisfied by the union.

"Fuuuuuck, Nina. 'bout damn time!"

"Shut up." Lips on lips, lips gripping cock, woman riding man.

Toby and you grope as you grapple, your entire body moving up and down and enjoying every bit of it. Then Toby lies back, lets you take over. You're happy to do the work if it means you can set the pace—and ensure your pleasure in spite of how close he is to being done. You lean forwards, your ass bouncing and slapping against his thighs as you rise and fall along the length of his cock.

"You like this, huh?" you ask, words spilling from your mouth like the cum you hope he spills in you in mere moments. "This is what you've wanted all along, huh, baby? You want to stick your cock in me like I'm a dumb bitch for you to fuck and ride while all these aliens watch, hmm?"

Toby still can't believe this is happening. "Yeah I want it. You're such a fucking sexy bitch, Nina, you're made for it. And you fucking know it now, don't you bitch? Couldn't fucking resist my cock—lasted barely more than a day before you came back begging for more!"

You don't reply immediately, too busy moaning and gasping as your cunt starts gripping his cock tighter and tighter. You're so close now; you can feel your abdomen tightening. "Mmm it's just so good having you inside of me. I need it."

"Need what, bitch?" Toby follows this up by seizing you by the hips and taking control, rolling the two of you over so he's on top. He doesn't interrupt the rhythm of the ride, though, and keeps pounding your pussy. "Tell me what exactly it is you need."

"Uhhhh, your cum!" Somewhere deep down inside, you can't believe you're saying this. Dirty talk was the norm between the two of you when were an item, of course—but Toby is your ex! You don't really want him to cum inside you, in an alien zoo, with no birth control, right?

Right?