I understand that this is a management game and not The Sims, but I thought it would be fun if marriage had a slight impact. Perhaps the spouse could be a little jealous of the actors, or spending time together at home could lighten the mood a bit. Gifts and playful dialogue would also be a nice addition. For example, if the actor tells the player they're pregnant, you could add a humorous option: "Well... maybe it's time to get married?" Of course, this is entirely up to you, I just wanted to share this idea in case it proves useful.