Sex With 3D Avatars of Exes and Celebs?

Apparently so.

On forums like Reddit, marketplaces like Patreon, and on standalone websites, communities of anonymous users are making, selling, and getting off to the computer-generated likenesses of celebrities and other real people. The 3D models that emerge from these communities can be articulated into any position, animated, modified, interacted with in real time, and manipulated in ways that defy the constraints of physical reality.

More here.