Well, I guess I love people because of things other than weight, and accept the fact that people come in a variety of shapes and sizes. I do not think this is romantic, and would not want to be with someone who was perfectly buff and who based their entire self-worth on that. That to me is unattractive.
Also, when I made that comment, I was not talking about someone experiencing life-threatening obesity, or someone who didn't lift a finger to take care of themselves, just someone with a stockier but attractive build, and a very busy schedule, who had approached an age when their metabolism slowed down. That happens to a lot of people.
Also, I think if someone who you "supposedly" love has reached a point where they have lost all self-respect and can not or will not exert effort to take care of themselves, and then you tell them, "Hey! You're fat and I don't find you attractive anymore!" that would not be a productive or loving way of handling the issue. There are other ways. People don't lose weight for their spouses, they have to do it for themselves.
All I can say is I do not care much about how much my friends or loved ones weigh, and I didn't mind when my husband put on weight. He lost it because we both wanted a healthy lifestyle, and I'm sure if I had criticized him or bullied him or told him he turned me off (which, in fact, he didn't, I love him and found him attractive either way) that would not have helped matters. Being healthy starts with loving and accepting yourself, not being thin because you're stuck with (in my opinion) bad company who cannot appreciate your good qualities or accept your flaws and struggles.