The pussy stretches and twists around her, trying to accommodate her length, as the creature makes another gurgling sound below her. The tendrils seem to extend, latching onto her dick and pulling it even further, until she's finally bottomed out in the vice-tight pussy. Then, the tendrils move to her balls, caressing and playing with the orbs, egging her on.
In the meantime, Alex is still going at it, fucking Wren hard and fast. Wren seems to be enjoying herself immensely, until she feels Alex's swelling knots pounding at her holes. She looks back over her shoulder with a little apprehension. "Alex, wait, don't- Augh!" She grunts in pain as Alex rams his knots right in. He grunts and pulls them back out before starting to fuck her with the knots, spreading her wide with each thrust. Her flexible body quickly adjusts, and before long, Wren is moaning in bliss again as Alex rams into her.