No, you cannot romance Raphael in Baldur’s Gate 3. Raphael is a tiefling who you can meet in the Underdark. He is a powerful wizard who is seeking the Crown of Karsus. Raphael is not interested in romance, and he will not be a romantic option for your character.
However, you can still have a good relationship with Raphael. If you are kind to him and help him with his quest, he will be grateful to you. He may even offer to help you with your own quest.
Raphael is a complex and interesting character. He is not a villain, but he is not a hero either. He is just a person trying to survive in a dangerous world. If you are looking for a romantic partner, Raphael is not the right choice for you. However, if you are looking for a friend and ally, Raphael is a good choice.