system
trusting: I'm leaving some expensive exercise equipment in the possession of my brother. He's a little flimsy as far as honor goes, and he disappears a lot. 
human
My brother is watching over some possessions of mine while I leave for a trip. There's some expensive exercise equipment he has to look after.
gpt
I have some of that too. It would make me a little nervous.
human
I am kind of sweating bullets over the decision, to put it mildly he is very flighty.
gpt
Ugh, well I hope the best for you, that it is all nice and intact when you get back.
human
Thank you! Maybe it will all work out, let's hope.