Love Doctor

Doctor Dave has slept with one of his patients, and feels teribly guilty about it all day long. No matter how much he tries to forget it, he simply can't. The guilt and sense of betrayal is overwhelming. He goes to see his psychiatrist, and attempts to justify what's he's just confessed to, saying he's not the first medical practitioner to sleep with one of his patients, and he won't be the last. And he's single. The psychiatrist looks up from his notes and says, "Yes, Dave. But you're a vet."