PS -- Forgot to mention that I've definitely had some similar experiences... in fact, I've had a couple of romantic relationships that crumbled abruptly when my respective partners witnessed me having a panic attack....
Ok, admittedly, if you've never had a panic attack, I'm sure that it'd be pretty scary to watch a loved one go through it. & on both occasions I didn't have my xanax on hand, so the attacks escalated & got pretty ugly... hysterical crying, vomitting, pulling my hair, etc... but still, in both instances they had known for a long time that I have an anxiety disorder. Plus... I mean, you think you're scared just cuz you have to watch it? I'm the one who has to go through it & deal with the aftermath! Cowards!

Ok, whoops, got carried away there for a sec... hehe... erm, anyway....
Ok, so how did these situations turn out? Well, my most recent bf, with whom I'd been in a commited relationship for about a year.... I never heard from him again after that (this was in the beginning of June), and he refuses to return a bunch of dvds I loaned him, which happened to be all of my favorite movies. Bastard....

.... but I shall take deep breaths & move on....
Now for the happy ending! I eventually reconciled with the other guy, and he is now one of my best friends. Ironically enough, he recently began sharing with me about his own troubles with depression & social anxiety. We've been able to support each other & bond on a deeper level, which has really been a blessing. So take heart... not everyone is going to be a complete jackass!
Damn, this was a long post...

... seems I'm gettin kinda hypo outta nowhere, hmm. Anyway, hope my tales of woe give you a laugh, or at least aren't too irritating...!