He's definitely mentally ill and looks sickly as well.
Wouldn't be surprised if he's drugged out of his mind too.
That's the dark side of porn, off camera these people are all nut jobs with mental problems, many were sexually abused and are addicted to drugs.
Life changes after the money shot. 
The women in porn were almost all rape victims has teens. I guess they probably turn to sex work because it gives them some sort of control that they didn't have during their rape. They are almost all addicted todrugs.
The men all have to start in gay porn and many have male fluffers suck them off on set to stay hard. It is not uncommon for these guys to go limp during a scene. Does that ever happen to a man in real life having sex with a hot woman?

These people are damaged beyond repair and they know it. They try to legitimize their career by calling themselves actors but really they are just pieces of meat that get used and thrown out like trash. It is almost impossible for a former porn star to ever succeed at another career. No one wants anything to do with them.