They fuck

The creature brought Jane off of her feet, holding her up by her waist as its large hands enabled it to do so. She yelped slightly, but a tentacle filled her mouth for her to suck on.

The large, purple cock of the monster perked upwards, nearly hitting Jane on the ass. You couldn't help but touch the buldge in your pants as you saw the scene play out before you.

Jane touched the alien cock, stroking it and eliciting deep groans from the creature. Before too long, she slowly guided its cock into her wet pussy. The purple length stretched her more than your human cock did, and you were surprised that she could even take it.

"Oh god~" she moaned, wiggling slighty to accommodate him. When she wrapped her legs around the monster, you knew that she was going to get into it.

The creature moved her up and down on its cock, using her to pleasure itself. Jane found it hard not to moan as it filled every inch of her pussy; its unique shape made it all the more exhilarating.

"Y-you feel so big..." she muttered.

The monster seemed to like that, and gradually picked up its pace with Jane. Her moans became more intense as she felt a pressure growing inside her. The pleasure this creature gave her was something she could never experience with you.

"Fuck...I think I'm gonna cum..." she whispered.

She sucked on the tentacles of the creature, and some of them grew longer to reach her breasts and play with them. It was a sensory overload. Jane tightened her legs on the monster, forcing its cock even more into her. A trail of black-tinged liquid dripped from her pussy, a mix of their juices. Did it turn you on watching your girlfriend be nothing but a toy for this monster?

Her moans grew louder and louder, eventually turning into screams as her new lover railed her, stretching her pussy out. In a few final thrusts, her legs shook as her orgasm hit her, and juices came leaking down the purple cock. The creature just laughed deeply as it pulled out from her, fixing to adjust itself.

"What else do you want, human?" Its pondered.