Most Helpful Girl
Does he say things like that otherwise or only when he's mad? We all say stupid stuff when you're ad and if he doesn't mean it, you shouldn't take it to heart. I think you should let him know how much is bothers you and make sure you guys give things a chance to cool down next time you argue.
You might just be so scared to lose him and that's why his words upset you so much. Other than what he said, do you see yourself with him long-term? Could you live without him and be with a different man without looking back? Did you dream of marrying him before he said that?