<human>: Could you distill the essence of the text into 1-3 sentences?

My boyfriend and I usually get along really well, but when we have the occasional disagreement sometimes it can be hard for me to structure my opinion in a way he understands. I'll start feeling anxious trying to explain and he reacts to my anxiety defensively. This is something we've talked about needing to be better about. I'm kind of looking for a script for how I can explain where I'm coming from.

Last year, one of my favorite artists was performing in a neighboring state. This is an artist I have seen before and it was the best concert of my life so far. My boyfriend has expressed interest in seeing this artist with me previously. The concert happened to be on his birthday that year. I showed him the tickets page casually and expressed interest in us going and he said "too bad that's on my birthday" and I was like, fair enough. 

Now my birthday is coming up. I decided I would get myself a present related to my hobby. It can be kind of expensive and I have to save up so my birthday seemed like the best choice. But my boyfriend's favorite band is playing a festival on my birthday. And he absolutely wants us both to go. To be fair, I've told my boyfriend in the past that I wanted to see this band and venue with him. But I didn't expect it to be on my birthday. Also, he can't afford tickets for both of us, so I will be paying over $300 for my own ticket, which would mean I couldn't afford my hobby related present. He doesn't seem to understand why I'm not super excited to do this.

We talked about it a bit but my anxiety kept increasing and he didn't know where I was coming from, so we decided to table the discussion for the evening. Am I being unreasonable? My boyfriend doesn't get it at all. How do I approach this again, and maybe reframe the conversation?
<bot>: My boyfriend wants me to buy tickets for his favorite band instead of what I want for my birthday. How to talk to him about it?