I made an account just for this. I just ran into this myself!
I romanced Fane as Sebille and he was my favorite character in the whole game. Had the romance scene before Arx successfully, did everything right... but now I finished the game and got just friendly dialogue in the epiloque, no mention of romance whatsoever. In the end it says he went to look for his wife. I'm, like.. WHAT..?! Why?!
This was one of my favorite things about the game and I'm sorely disappointed. I had so much fun for the entire game.. but then at the last moment I miss out on what happened to Fane and my character.
It felt like the game pulled "Mass Effect 3" on me (for those who've been trough disappointing endings before...:P)
If this won't get fixed I'd at least REALLY like to know what happens to Fane and the main character when they're romanced -- Please, I need to know! :'(
