In most of my save files, I've married Sebastian first. I love his character. I have tried being married to someone else but... they... seem to not be as interesting once you've married them.
Am I the only person who wants to see dialogue from your ex-spouse when you get remarried? Particularly, I think it would be very interesting to see dialogue from Sebastian after you've divorced him and get married to either Abigail or Sam. Also, more dialogue when you've been caught giving gifts to other bachelors or bachelorettes more than once. *coughs* Yes, I am aware that this is a game for everyone... I guess I just thought it would be interesting to see.