Relationships with someone struggling with eating and image issues

I’m in a strong loving relationship, this individual has for some time has self image issues . Which I know is not uncommon, but over many months and years has progressively become an eating disorder , strangely I have supported and counselling many over the years , but I’m now in a relationship with an individual I was not totally aware was In such a situation and stage . I’m struggling with it now being no longer clinical , but someone I love and have a good friendship with . We are closer than ever , but it has affects on the progression and how our relationships has evolved in good and bad ways . Just wanted to hear respectfully from any individual who have been in either position as an individual suffering and being , feeling understood by a loved one about your emotions and feeling in regards to your eating and image , but also from someone who deeply cares for and loves someone who is struggling with these issues ?