Congrats, Tom! Awesome new chapter in life.
I heard someone say this a while back and it stuck with me. In regards to staying together a long time:
"We never quit at the same time."
This is the whole "until death do is part" part. You commit on your wedding day to staying together through the tough times.
For someone who isn't married, this is a great piece and more insightful than a lot of already-married people could conjure up.