My best friend forgot me on my b-day

So I asked my best friend to do something for my birthday this weekend…
She said she was busy with her boyfriend — which is fair enough, I get that.
I then asked if we could do something next week instead, but honestly… I had to really push for it.
Before that, I’d even suggested we wait until November (that’s when I’m next free),
but she said that was too far away.
Meanwhile… a few months ago, she asked me come to her boyfriend’s birthday meal —
months after his actual birthday — and I barely even know the guy 😭
I didn’t mind at the time, because I love her and wanted to support her.
Anyway, we were supposed to go out on Monday,
and then she texted saying she was broke and tired and couldn’t make it.
I said I felt a bit hurt — and suddenly she said she would come. But was saying she was struggling with money guilting me into not going. Although she is very careless with her money and has been out spending all weekend. But by that point… I didn’t even want to anymore.
It just felt like I was forcing it, like she didn’t really want to be there.
I get that we’re adults now, and people are busy…
but it still hurts when the energy isn’t matched.
Especially when on her birthday, it’s always a big deal —
everyone’s expected to show up, and I’m sure she would be upset! If this wasn’t the case I wouldn’t care so much. Also she is not any friend she is by best fiend of 12 years.
Am I overreacting we are adults in our early 20s.

You are not overreacting. Have an honest conversation with her about how you feel.

Thanks I appreciate this, I have talked to her and she still just doesn’t seem to get it she says we can go out for the meal now and doesn’t quite get why I’m upset and just keeps deflecting it. Saying I’m such a bad friend ext… I think I will need to have a proper conversation in person and explain about the whole thing of why can we go out for her and her partner and yet when it’s me, it’s different.

Thanks I appreciate this, I have talked to her and she still just doesn’t seem to get it she says we can go out for the meal now and doesn’t quite get why I’m upset and just keeps deflecting it. Saying I’m such a bad friend ext… I think I will need to have a proper conversation in person and explain about the whole thing of why can we go out for her and her partner and yet when it’s me, it’s different.