So, my boyfriend (27M) decided to plan a “special surprise” for my (24F) birthday. I was expecting a nice dinner, maybe a cute gift. Instead, when I got to his apartment, he had another girl (who I’d never met) waiting in lingerie. He proudly announced that he had set up a threesome for me because he thought it would be “every girl’s fantasy.”

I just stood there, completely stunned. I didn’t know what to say, so I just walked out and left him standing there with this random girl. Now he’s blowing up my phone, saying I embarrassed him and hurt his feelings by rejecting his “thoughtful” surprise.

He says I overreacted and that it’s “just fun.” I think this was wildly inappropriate, but now I’m second-guessing myself because he keeps saying I humiliated him. AITA for just walking out instead of talking it out?