I think the real question here is why would a non Muslim want to date a Muslim girl in the first place. And I don't mean muslim as in "oh my parents are muslim but I'm only 'officially' muslim. I still drink alcohol and have sex". I mean devoted Muslims that pray, fast and won't let you bring home pork. What's the point? You'd have so little in common
One of my friends who is muslim actually says they technically aren't allowed to date in the first place. Idk that's true or not though