Same here on my 3rd night (I think) Raphael appeared, and after his offer. I talked to Astarion and he told me something like "I will not trade a Vampiric master for a demonic one"... But at the time he didn't tried yet to bite me and didn't reveal any of his vampiric secrets. So it was a bit weird and spoilery.
Last edited by Glouk; 07/12/20 05:20 PM.