Not really an AIBU, more of a WWYD but wasn't sure what topic this would come under, apologies!
DP has had issues with food for a long time - he lost a lot of weight before we got together which I later found out was due to bulimia. He has slowly gained much of the weight back over the 5 years we've been together. His eating habits have descended into essentially constant binge eating - for example today he ordered about 6 McMuffin meals and has been eating them throughout the day, he's been out for dinner this evening and now he's talking about getting another takeaway tonight (we went out for dinner last night too) - this isn't unusual, he gets multiple takeaways in the week. The issue is most definitely not the weight gain, I couldn't care less what he looks like and I've gained a bit of weight myself (as most of us do when we get into a happy relationship!). Money is a slight issue just because I think it's a huge waste but we have our own money once bills and mortgage are paid so it's his to spend on whatever he likes. My concern is his health - I imagine a diet as poor as this is having a significant impact on his health and I obviously don't want him to die any time soon! He exercises a lot but is still obese in terms of bmi and obviously can't completely compensate for the diet.
He is highly sensitive about this (for obvious reasons) so it's very very hard to address it with him. I try to do it in the most sensitive way possible and have explained that I don't care what size he is, I just want him to live a long healthy life - but he still says he feels I am shaming him. Food is a massive source of shame for him in general, he hates eating in front of other people etc. I'm at a loss as to how to address this with him - I think he probably needs some specialised counselling and would happily help pay for it but this has been instantly shut down in the past. There's also no one else who could talk to him about it, he'd be mortified. Is there anything I can do? He definitely wants to change but I think it's just gone so far he really feels like he can't fix it and wont let me help.
Sorry for the long post, any advice would be much appreciated!