During my wedding reception, one of my wife's guests (a very astute and funny gentleman) told me that being married doesn't really hit you until the first "normal" day you wake up after all is said and done. He also said it's a life-altering event watching your wife walk down the aisle, but that's not the point.
This got me to thinking (a dangerous prospect for us writers) about what "normal" really is. "Normal" for me was seeing my new wife on the weekends and sporadically during the week for the past 2+ years (details I won't bore you with), but the new "normal" is having her there every day and seeing her when I get home at night. There's a wealth of novels about newlyweds (or if there isn't there should be) because the beginning of married life is bound to be good storytelling fodder.
It's not something I'd write, personally, because it sounds more romance-novel-esque than what I'm comfortable writing. Doesn't make the plot idea any less valid though.
EDIT: I told you I'd be back on the 22nd.
SECOND EDIT: Meant for that to say "It's not something I'd write about" because of that reason. That's what I get for not proofreading I suppose.