My brother and I were both raised culturally Jewish but not religious whatsoever. He’s been with his girlfriend (not Jewish) for 3 years and they live together. She and I are very close (I’m a girl if it matters. Also we are both in our mid 20s, brother is 30.) anyways she said something to me about my brother being “very observant” and I was like haha no he’s not….and she goes yes he observes sabbath etc. so apparently every weekend (the entire weekend) my brother refuses to help out around the house bc it’s “sabbath” and just plays video games. He eats pork and shellfish but only after a “cleansing” ritual where he chants over a plate in Hebrew (100% certain he doesn’t know Hebrew.) Apparently he also told her that oral sex on a woman is forbidden more than once a month. I told her he’s full of shit and these aren’t real Jewish things, also he isn’t religious at all and is using this to get out of stuff he doesn’t want to do. My brother confronted me very pissed and admitted he made up the rules but said I should have gone along with it and it’s not my business.