I'd wager the vast majority of people that don't know anything about another person's religion couldn't tell if what they're saying is true or not.
Circumcision, fasting, transubstantiation, without any knowledge or frame of reference there really is no way to tell if someone is just talking out of their ass or not when it comes to religious traditions.
ITS IN THE LIGHT
THE MOON CAME IN
HE FOUND ME
THRU THE MIRROR
MOONLIGHT WHITE
WHITE LIKE EYES
NOT LIGHT BUT BLOOD
I DROWN IN HIM
IF YOU ARE AFRAID
WE WILL LOOK TOGETHER
People within the supposedly same religion can't agree on things all the time. It's entirely possible that his girlfriend's version of the religion is nothing like what op would find online, or even more likely, that Appleop would find multiple claims online that disagree with each other.
The thing about religion is if looking at the moon is against a religion, but some senior person in that religion really likes to look at the Moon, it'll suddenly be allowed.
"The Internet says you can look at the moon"
"Oh that's regular Navajo. I'm Fundamentalist Navajo. Also, fuck you for arguing with me about my religion. We're through."
read an entire novel about Navajo and their crucial importance when it came to coding messages in the world war
Remember next to nothing in the one time it's relevant
Ah shit