If you want a friendly suggestion? Do NOT romance Sebastian. Save yourself the grief. When romancing him you have to be female, can't ever give one romance line to anyone at all, not even once..and if you succeed in romancing him you only get a CHASTE marriage. She never has sex with him ever.
Many people have romanced him only to be totally let down, and it's a shame as he's one of the most attractive men in the game.
[Edited by Aeterna85, 3/18/2011 1:17:02 PM]