<human>: Can you condense the text into three sentences or less?

So i've been dating this girl for a while now, and i planned on us going to Prom. I even got us free tickets from a fundraiser our school did. a month ago, she finally came out and told me that she couldn't go because her family "didn't believe in dancing" (the parents are super religious). First off, let me say I'm not mad at her, it's not her fault she can't go, she wants to just as much as me, it's just her dad just apparently hasn't seen "footloose". 

Anyways, so i work up some courage and ask the dad respectful like, and he instantly turns me down and changes the subject multiple times, then leaves the room. He has openly admitted to his daughter that he enjoys making me feel uncomfortable and giving me a hard time, which i can deal with, but this is just being ignorant. 

Now my gf is telling me to go without her, but understandably, this just wont be any fun. i still want to go, but i'd feel terrible without her. But here's the kicker, i was just invited by female friend to another school's prom. I'd much rather go to mine with my gf, but if i go without her, that will just embarrass her, having to explain why. If i go to another school's, i get to go to prom with a good friend, and can tell everyone at my school that we just "chose not to go".

Should i try the gf's dad again? what should i say? and is it a dick move to go with a friend if she can't go? 
I take her to school every day, she comes over till like midnight every weekend, it shouldn't be a matter of the dad trusting me, but that's what if feels like. already tried the "we just wont dance" approach, but he's just being a dick
<bot>: gf cant go to prom cause of dad. got invited to another prom from a friend. should i try to ask the dad *again* or go to friend's prom