Going through a bad break up and asked to see friend but she was busy that night and invited me to go with her to London the following weekend to visit a mutual friend.
I asked her about train tickets and at the end of the week she bought and paid for us both.
The night before my grandma died and so I didn't go. Now a month later and friend is chasing up the money for the train ticket. I don't think I should have to pay, aibu?