Board Thread:Spoilers!/@comment-5899967-20180310131045/@comment-25375217-20180311030331

I agree that Regina and Facilier's relationship was mainly sexual, but they both also clearly have feelings for each other. Which is not out of character for Regina, since we are supposed to believe she had a thing for Rumple this whole time (look, I don't buy it either, but we've been told it's fact, so I've come to begrudgingly accept it) and she seemed to mourn Graham as well as kill him out of jealousy, indicating she had a thing for him, too.

I'll throw out some speculation, too: Facilier confessed his feelings for Regina during her Evil Queen days. Out of fear of finding new love, Regina becomes angry and curses him, leaving him in the state he's in that requires the Firefly Ruby to free himself. In Season 3, when Regina becomes open to love again, she doesn't bother going after Facilier because a) he's evil, b) she's "destined" to be with Robin, and c) he probably hates her for what she did to him.