The 21st is yellow. Go big.

To say sorry

Make the apology visible from the street.

To show off

The photo should need no caption.

For the ex

So they see what they lost. Sent to their new place, obviously.

For the other one

Big, no card, and we never tell.

For the mother-in-law

Win her over once and for all.

For Mom, who already knows

She found out before you did.

One month together

One month. Celebrated like ten years.

For no reason (suspicious)

Just because. Don't ask.