"a cult??"(n)-a system of religious veneration and 

devotion directed toward a particular figure or object.

tell me

"they say they're christian. but it's more than that, it's pretty extreme."

how I

"and they'd disown you for, what, not obeying them?"

react

"pretty much. look, you wanted to know why my dad and i don't talk and this is basically why.

 i don't want to be a part of it anymore and he has a problem with it."

tell me 

"i understand. just...why now?" 

if you're 

"i just...they lied to me. about something huge. that's it."

"...okay."