My friends have never hosted an Orthodox Jew for the Sabbath before.
I found myself asked, “What does kosher mean?” And I stumbled. “I think it means ‘fit’ or ‘appropriate’,” I said. “Food fit for a Jew. I’m a vegetarian and that makes keeping kosher much easier.”
And then I found myself explaining “kosher grape juice.” I said that about 2,000 years ago, the rabbis decided that Jews should only drink grape juice and wine grown by Jews. I didn’t explain but I think this is obvious, that it was part of the rabbinic fence to minimize socializing with non-Jews.
If you can’t drink with them, you are less likely to sleep with them.