My BF will leave me if I lose weight

Hi all- as it says my bf has made it very clear that he doesn't want me to lose weight and even told me today that when I walk around in my BD suit he has a hard time finding me attractive knowing that I'm losing weight.

My heaviest was 260, and that's when something changed and I started my journey. So far, I've lost 30 lbs and counting.

This isn't the weight I was when I met him. I was actually 220 when we met 6 years ago. He literally sent me to the mall to look at engagement rings and get my size yesterday. That's all he has been talking about, but apparently, in the back of his head, he is slowly finding me less attractive. (Why want to marry me if that's the case?) He said if I go under 200lbs we're done.

I want to be healthy and strong and not get winded just walking for 10mins or climbing a few flights of stairs. I was also close to being pre-diabeti, but now I'm not.

I get everyone has a preference when they start dating someon, but almost 6 years you'd think he'd love me for me. I never thought me getting smaller would be a downside in our relationship.

He says that I'm not giving him what he wants (marriage and children) and that this feels selfish. He also said that if I give him just one of those things now it'll be different. Like all of a sudden me marrying you will have you start to fond me attractive again even though I'll still be losing the weight.

Oh, and he thinks it's also selfish that I'm might have to go back into work 3 days a week after being remote for 5 years and says once again he is getting nothing