As this didn't really help, I asked an A.I.
This is the answer:
Based on the initials and the clue about unhealthy behavior involving couches, you are likely referring to Jerry Dunn, a fictional character from the animated sitcom "Rick and Morty."
Jerry Dunn
Known for: Neurotic and insecure behavior, often involving his couch. In the episode "Rixty Minutes," Jerry becomes addicted to an interdimensional cable channel that shows him alternate realities where he is a famous actor. In one of these realities, he spills wine on his couch, which causes him to spiral into depression and ruin his career.
Relevance to the clue: While not a real person, Jerry Dunn is a well-known character in popular culture and is associated with unhealthy behavior related to couches.
Is this correct or hilariously wrong? I am not into Rick and Morty, so I can't tell...
Hmm, might be, because of some recent grooming stuff involving minors (Never heard of him before though, just googled the name together with the word "couch").
Johnny Depp might also be a candidate. Some pages state that the safety word during plays with Amber Heard was "Couch"