I have suspected it for a while. My suspicions were first raised when he said to keep an eye on DS2 (14) as he had been going to the toilet before and after meals and he said I hope he is not making himself sick. It is an echoey bathroom so I know he certainly wasn't doing that! However he raised my awareness and it dawned on me that he might have been speaking from experience because I began noticing that after DP has used the em suite toilet, there is often a 'film' left on the water in the pan, plus some hastily cleaned splatters which I know is vomit. Sorry for graphic but I don't know how else to describe. I notice this happens most days esp after evening meal. I probably should have came here first to ask how I should broach it with him, or even whether I should, but I said to him was his tummy ok, as I'd noticed he'd been sick, and that I had noticed he had been sick most days. He said he just felt full and some foods upset his stomach. I asked him if he knew that purging could sometimes become a problem and he just laughed and said he is absolutely fine. He is more scrupulous with his cleaning up after that conversation but I can still see he has done it every day (I am anal about toilet cleanliness but I feel terrible checking the toilet to see if he has been doing it) I don't know how or even if I should bring it up with him again. Sorry this is long. Any advice would be great.