Embarrassed myself on my birthday

Feeling horrible about this, as I accidentally got too drunk on my birthday and pretty much ruined the night… I had 4 light beers earlier in the afternoon over about 3 hours, ate some tacos, had some water, felt completely fine. Took a shower and started to get ready for dinner, poured 2 glasses of red wine. Felt amazing. Got to dinner and ordered a cocktail, half way through it started slurring speech and not feeling so great and realized I was way more intoxicated than I had anticipated. I then started asking my boyfriend if we could leave the restaurant before we had even paid or boxed up any food.

I’m really embarrassed about it and mostly feel shameful that he took me to a nice place and I got too drunk to really even enjoy it. I crashed as soon as we got home and didn’t have any hangover the next day, so I’m just wondering what happened. I felt completely fine up until a turning point where it felt like it all hit me in the face at once. I don’t like to be drunk and I feel so awful that the night ended so abruptly. I didn’t mean to get that intoxicated.

Luckily my boyfriend isn’t mad, but he had worked all day and was looking forward to a night of celebration with me that just didn’t go as planned. Ugh. He deserved better behavior from me. He suggested that we can do something else to make up for it as redemption, which I appreciate, but I hate feeling like I ruined my own special day. Thoughts? Having a hard time shaking it.