Is AUTHOR wrong in the post ? POST : Long time lurker, first time poster. On mobile as well

Okay so uk boi here, and backstory for the day, i went out with best friend to go shopping and shit, but i'm so easily distracted I wasn't really listening to her half the time, and being a bit snappy, so I was being an asshole in that case, but we talked and i apologised for that etc. All was good. 

But shit went down much later. The reason why we went shopping is that it was pancake day (UK thing) and we'd missed it cause she wasnt feeling well, so we decided to do it the next day. I go home, leaving her with her mate in town, saying we'd make pancakes when she came back. As she came back, i get a text off a different mate telling me to get to a nearby town, as the band while she sleeps (a favourite of mine) are doing a signing and that his dad had got him two free tickets to the signing and the show. 

Now me, loving the band and knowing that this is an extremely rare opportunity to meet them (for free), message mate 1 and tell her that I'm so sorry but I'm gonna have to cancel cause i'm not gonna get this opp again

The only other thing is, she was going home from Thursday-monday (we're both at university) so it was the only opportunity to have these plans

Tl;dr I cancelled on my best mate last minute cause i was given the opportunity to meet one of my favourite bands the day before she went away