I have been on single person child tax credits and working tax credit for 5 yrs plus. During June 2013 a friend moved into my home as he was in financial trouble and had moved out of his flat and was sleeping in his office. He was served bankruptcy sept 2013 he was very depressed slept in a separate bedroom and we were not having a physical relationship - low labido etc. He was discharged from bankruptcy during April 2014. During the following month 2 employees took delivery of a large amount of cannibis at his work place and he was under investigation from the police - more stress! Sept 2014 the police told him no case to answer as even though his address was used he was not party to it and was unaware of it. He was still sleeping in separate bedroom and still very stressed and no labido. It was always the intention that once he was back on his feet he would move out. However since Sept he has started feeling stronger and we have become closer and do things together but are still not having a physical relationship but are seen from the outside world as a couple. foolishly I telephoned Tax Credits in Jan and said he moved in Dec 19th 2014 and we were not a couple. I didnt realise it would kick start investigations and have recently received a letter requesting info to confirm only my name is on the bills and confirmation of his address prior to Dec 19th. Clearly I should have called them and told them he has lived here since June 2013 but only recently become a couple but as it is still not physical I was confused what to do. What is the best advice now please?