I don't know if I'm the one to give advice, since I don't have a SO...

But I just tell. No apologies. If it is even necessary. I mean - order whatever you want in restaurants, make whatever you want at home, the only time it ought to even matter is if someone gives you something to eat, or prepares it for you.

Then, I would say - I follow a certain way of eating that keeps me healthy, which means I don't eat certain foods. That's all.

Anyway, any guy that bashes your choices of how to live is NOT the right guy, IMHO. Better find out now - don't be coy.