
[^ fanart by @liquorandptsdvarietyshow who deactivated, but I’m crediting them and I have permission to repost their art]
We don’t really know much about mortal!Louis’ sex life… in the movie he had been married, and the wife had died in childbirth, one would hope that was his kid, and then he was hanging around w/ whores when he was trying to get himself killed, but he barely even acknowledges that one whore’s presence, even though he has his arm around her to stabilize himself. My general impression of Louis is that of all the vampires, he’s one of the least sexually-motivated.
In IWTV, Louis tells Claudia re: sex: “ ‘It was something hurried,’ I said, trying now to meet her eyes. How perfectly, coldly blue they were. How earnest. ‘And… it was seldom savored… something acute that was quickly lost. I think that it was the pale shadow of killing.’ ”
We don’t know if he just said that to be make her feel better about the fact that she’ll never experience it but Louis usually tells the truth.
I don’t think Louis would have had sex w/ Merrick.
Spoiler alert.
So would Merrick and Louis have had sex? If Merrick wanted it she probably could have voodoo’d him into it, she voodoo’d him into breaking his moral principle to never make another vampire. Without bewitching him, I’d say no.