Welcome to the boards!!!
I'm also nervous about recommending this WOE to you. The fact that your partner thinks it's a bad idea is alarming to me. Those closest to us have a better grasp on our behavior than we do.
My mom was an anorexic when I was a kid - she even grew fur on her stomach and was hospitalized for it. She was cured by the time I was 10, but I still remember some bits pretty clearly. Even now, 30 years after she's been a healthy weight, she occasionally gets a bit obsessive and looks at food in a slightly unhealthy manner. My dad works on trying to get her to regain her perspective, and thankfully she always does.
My younger sister was bulimic for many years. She has wrecked her esophagus. Mom and I do not have a great relationship with her and we just hope that her husband, a doctor, is keeping her healthy.
My eating disorder is the easy one - I just eat too much

But I've always said I'd rather be fat than have their struggles. Perhaps that's part of the reason I'm fat. Who knows?
Still, it's those closest to us we really need to listen to. They see us better than we see ourselves, warts and all. If your partner doesn't want you doing this, I'd ask you to please respect that. It might be a slippery slope that does you in.