system
guilty: I forgot my brothers birthday. I tried to make it up by calling the next day but he knew I forgot.
gpt
I forgot my brothers birthday and I tried to cover it up but he knew. I called him the next day but it wasn't the same.
human
Oh no! I hate when that happens. Happens to me all the time. Did he forgive you?
gpt
Yes. But he brings it up when he wants to mess with me.
human
That's not very nice of him. Is he older or younger?
gpt
Older. Brothers and sisters mess with each other. Its just a thing.