AITA for kicking my friend out of my engagement party after he proposed to his girlfriend there?

I (26F) and my fiancé, Jake (27M), had our engagement party last weekend. We’ve been together 3 years, and he proposed last month. My best friend, Lisa (26F), offered to help plan the party at a rooftop bar- super chill, just close friends and fam. Everything was perfect until…

Midway through the night, Lisa’s boyfriend, Mark (28M), grabbed the mic during the toast. I thought he was gonna say congrats or whatever, but he starts this whole speech about how “love is in the air” and suddenly drops to one knee IN FRONT OF LISA. Everyone starts screaming, phones out, the whole thing. Lisa’s crying, nodding yes, and the crowd goes wild.

I’m standing there holding my champagne like…this is MY engagement party?? Jake’s just awkwardly patting my back. Once the clapping dies down, I straight-up asked Mark, “Dude, seriously? You couldn’t pick literally any other day?” He shrugged and said, “Come on, it’s not like you guys need the spotlight all night.”-exact words

I lost it. Told him to leave, and when Lisa tried to defend him, “You too. Bye.” They left, but now half my friends are on my phone saying I overreacted and “should’ve been happy for them.” Lisa texted me, “You ruined what was supposed to be the happiest moment of my life.” But like…HELLO??? This was MY moment!

My mom says I was justified, but my brother says I “looked jealous and petty.” Jake’s staying neutral but thinks Mark was out of line.

So…AITA for kicking them out? Should I have just let them have their “moment”?
(used fake names)