system
Given the following post, respond as if you're commenting on Reddit:
human
[General] Is it cheating if your SO houses a second spirit and you have sex with their body while it is being controlled by the the spirit?
gpt
One can argue the philosophical implications all they want, but in the end the only thing that matters is whether your SO considers it cheating or not. 

I would personally say yes, if you are aware that it isn't your SO's person in the body it would be cheating, as it is the intimacy with another person that constitutes the cheating, not the sex per se. It could even be considered rape if your SO didn't consent to the sex.

But if your SO houses another body and you have sex with her possessing that body it wouldn't be cheating (but it would be considered rape if the person housing the body didn't consent).