It's very wrong to sexually assault your pets.
Nate hasn't been going outside due to the pandemic, and he hasn't had sex in forever.
Nate wants to relive himself sexually.
Nate opens up porn on his computer and masturbates to it.
Nate grabs his dog and puts his genitals in his dog's butt.
Nate is able to relieve himself, and he doesn't have to think about sex anymore.
Nate feels ashamed and thinks about it every time he sees his dog.