My son wants to marry a non-Jewish woman he loves deeply. How do I handle this as a parent without destroying our relationship?

First, let yourself feel the loss without apology. You are grieving a future you imagined — a Jewish home, grandchildren raised inside the tradition — and that grief is real and legitimate. Naming it honestly to yourself is healthier than pretending you are fine or, worse, weaponizing it against your son.

At the same time, hold two truths at once. Halacha is clear about intermarriage, and you are not required to celebrate what you cannot celebrate. But your son is not a halachic problem to be solved; he is a person you love who is also trying to build a life with integrity as he understands it. Treating him as an argument to be won almost guarantees you lose both the argument and the son.

Practically: stay in the room. Keep inviting them both to your Shabbat table. Let her experience a warm, confident, joyful Judaism rather than a defensive or angry one — far more Jewish homes have been built by warmth than by ultimatums. Many couples who felt no pull at the start found their way toward a Jewish life precisely because the door was held open with grace.

And get your own support — a rav who knows you, and people who have walked this path. You will need somewhere to bring your fear and disappointment that is not your son's dinner table. The goal is not to "win" but to still be standing close enough, years from now, to influence anything at all.