He is very complex character but he has always been straight forward about himself and his intentions.Consider the entire situation before calling him a red flag. His condition,his upbringing what he carries on the shoulders. He is loyal, cunning,smart, passionate and she is judging him based on the past life. Considering her actions in this life with the past knowledge of course he was defensive because he had a lot of enemies and she seemed to know too much. He had a mission and she was the unexpected.
Que miedo da este personaje. Lo que profesa no parece ser amor, sino una enfermiza obsesión y como dice una persona en su comentario, él no puede obligarla a demostrar que lo ama. Y al verlo así entiendo porque ella quería guardar silencio.