A lot of things happen over the course of a football game, but revealing a stranger’s infidelity isn’t usually one of them. Yet that’s exactly what happened to this guy. During the Lions-Bears game on Thanksgiving, this guy noticed the woman in front of him texting a person named “Jason” saying how much she wanted to be with him, except she was at the game with her husband. So he did what any rational person would do: Write the cheated-on husband a note.

Did we mention she was 8 months pregnant?

Here’s the note he sent:

And here’s what he posted later that night:

This is one football game none of them are ever going to forget.