I wasn't planning on it, my GF bought the tickets without asking me about it, and didn't know about my pal being into the band. But my friend figured I was the one who left her out. Plus, not everyone gets invited to everything, hey I'm dating someone here. Called me up and berated me about being a bad friend without saying what it was she was mad about. I prefer not to have friends that use that kind of rhetoric.
I did realise that it's a specific situation but as the original post didn't have more context, I didn't see why I shouldn't be allowed to suggest some.
If OP wants to expand on the situation, they're welcome to.