I get the feeling the boyfriend did this to try and help OP get over her anxiety, or at least reduce it, not to be an asshole. If not, then sorry, OP, FYL. I have social anxiety, too, I can relate.

Wow, for him to use your weakness against you is low. You should find someone else to go with. Don't let his manipulation stop you from having fun.

Who has homecoming this late in the school year?

I didn't know you could hear a dick move

focus on your anger at the situation, not on the anxiety. go to the dance if you want, but go alone or with a friend. you can back out. I know its hard but don't let people like that take advantage of you.

Gotta learn how to say "no" my friend. You gotta fight if you wanna conquer it. It's not right for someone to take advantage of you're anxiety, especially coming from you're ex. Because to me, he sounds like a dick which is I'm sure that's one of the reasons why you guys broke up.

This is why big, public proposals of any type are not always a good idea. Even if the intentions ARE good. Your ex's intentions were not good. Do you have any close friends that are cool with ditching the dance? Because it sucks that, if (hopefully) you manage to say no to him, you have to sit at home alone all night. At homecoming one year, my friend's abusive ex was harrassing her. After about half an hour she and I left, got the bus to another friend's house, and we all hung out and played cards and had some beers instead. It was a ******* great night.

I guess you can if it's big enough.

Back out. You absolutely can. Text him, or, if the confrontation is too much for you, just don't show, and **** what he says afterwards. I know you didn't want to look like an asshole, buy he deserved to have been embarrassed for doing that.

It's not that hard to say no. Then he looks like the idiot in front of everyone else. And on homecoming you can either stand him up or show up with someone else.