13 years, 2 months.
Dear Jack,

Last Friday night while Mommy and I were out at your sister’s school dance, there was virtually no discussion about the fact that you would just stay home.
Because, you’re 13 years old. You’re a teenager now.
To my knowledge, you simply stayed in your room; playing a racing game on your phone or binge-watching Young Sheldon.
But for all I know, you may have slid on the hardwood floor, lip-synching to “Old Time Rock and Roll” or maybe you had a big party with all your friends.
If so, you did a good job of hiding all the evidence!
Love,
Daddy