Not gonna get into the whole double standard or what I think this meme is trying to say.
In general that statement should be true. True love shouldn't care what size you wear.
Can you not like the different size or prefer their old size or really push them to get to a different size? Sure. Doesn't mean you don't love them though.
I got real sick way back in my early relationship with the mr. I lost 30 lbs.
I looked straight crackish.(and I'm not a big girl. ) I'm sure he still loved me then.