Boyfriend and laxatives. What would you do?

I've made a couple posts about my boyfriends.bad relationship with food. He will binge eat so much and then not eat for days to make up for it. He was doing good on not binge eating until I saw his truck had so many wrappers and pie plates and was stuffed with evidence of a severe binge. It gets worse. He's never really ever gained weight from his binges. I thought its because he makes it up by not eating but when I went looking for toilet paper I found boxes on boxes for durocolax laxative. There were like 12 boxes that had laxatives or suppositories in them and like 20 empty boxes. This will be way more awkward to confront than the binge eating and when I confronted the binge eating I made him cry...