After some serious thought about whether it should be a Christmas event or not...
I bought Kat an engagement ring.
Nothing outlandish since we just bought a six-figure house but nice enough to make her cry on Christmas morning.
I even wrapped it and put it under the tree so she had to stare it for four days wondering what it was.
Then when she opened it I was on one knee and proprosed to her right in front of the kids.
Hah. That'll larn her.
Tentative date for March 12th.