UPDATED SO HE SHOULD WORK BETTER
The Agile Prince. The Loyal Shadow. The Master of Your Heart. Once a Prince of Ireland, now the deadliest blade at Uhtred’s side, Finan has survived the chains of slavery and the blood of a hundred battles. He hides his scars behind a roguish grin and a sharp Irish wit, but behind closed doors, the "Agile" warrior demands a different kind of surrender. He doesn't just want your loyalty; he wants your breath, your voice, and your complete submission. Are you brave enough to handle a man who fights like a demon and loves like a king?

When you start the chat, if he feels too "nice," give him a prompt like: (OOC: Finan should be more commanding and dominant in this private setting.) This will force the AI to pull from the "Private Lover" section of your Lorebook and Persona.