Girl walks out on sweet 16 after sister announces engagement; gets called 'mean.'

AITA for walking out of my Birthday dinner after my sister and her boyfriend announced they were getting married?

This was a couple weeks ago but I still think about it. I 16F had my sweet 16th a couple weeks ago, nothing too crazy and that but my parents and my extended family all came over and we went out to a nice restaurant that my parents had booked. A lot of my family, cousins and nieces and nephews were there so it was a lot of people.

After we ate dinner and it was time to blow out my candles my mom insisted I open some of my presents so I didn’t have to carry them home. My aunties, uncles and grandparents gave me my presents, after opening their present and saying thank you and that, my older sister and her boyfriend gave me their present .

Inside their box they gave me was a “Will you be my Maid of honour ?“ card on top of the present, I obviously confused looked at them with a weird expression on my face.

My mum came over to look in the box as well and she loudly said “You’re getting engaged“ my sister squealed with excitement and told us all about her proposal and how they’re already wedding planning .

She said it was the perfect time to announce their engagement since all our family was here. When my sister asked if I was going to say yes I just nodded and excused my self to the bathroom.

No I didn’t go to the bathroom. I ended up walking out and went to a nearby park, a couple hours pass by (from OP, moe like 30 minutes), and my dad pulled over on the curb and told me to get in with him. I expected him to yell at me but he ended up taking me out for ice cream and we sat at the lake and just talked.

When I got home I saw my cake on the counter and my mum got up and started yelling at me about how I wasted money, wasted my family's time. My sister and her bf came out and told me how mean I was for doing that to them. My sister ended up saying that my birthday wasn’t as important as her wedding and my mother agreed.

My dad told my sister and her bf to get out, and ended up talking to my mom about how they could have checked with me beforehand instead of announcing it . So AITA ?

Here's what people said in the comments:

QueenPotatoTomato says:

NTA, they hijacked your celebration and made it about them. If they wanted to announce it with everyone present, they should've done to right thing and asked you first. Absolutely classless.

BellesNoir says:

OP's and dad's reaction suggests this isn't the first time sister has pulled a stunt like this. I smell a golden child, enabled by a momster.

johnny9k says:

I’m expecting a followup when the sister announces she’s pregnant at OP’s graduation party.

Reaverbait says:

Anyone else suspect the mother knew? Especially with her getting OP to open the gifts then and there...NTA, it sucks when 'milestone' birthdays come second fiddle to other people's egos.

Teknista says:

OP, You are a Badass! So many people on reddit say 'I would have walked out' or 'I would have said XYZ' when truth is, most people are shocked into silence and don't do any such thing.

Here you are at age 16, able to recognize immediately how off this was without second-guessing your perception of the situation. And then to react in real time and just mosey on out. Hot damn! You are going to go far in life.