Offered to help a friend by going with her to help drop off items the night before for a surprise party for her boyfriend. She agreed, date set.
I saw her about a week ago and she didn’t mention me helping her but said “his sister is coming with me the night before to help me bring everything over to the venue” Fine. I then made other plans.
She asked me today if I was still helping, I apologised that I now couldn’t as I’d made plans and thought his sister was helping her. Turns out his sister has since changed her mind and doesn’t want to help.
Aibu to think it’s a bit cheeky she took my offer of help, then decided to use someone else but then thinks it’s ok to assume that I will still help?