My xah is a cocaine addict. He won't admit it, and the one thing he said to me was, "look at me I'm fat, I'm not snorting cocaine". But he is. Everyone is different. Signs of his use were his nose. He had a cold that never went away and his nose was always cracked. He was always taking cold medicine. And of course behavior, lying stealing and cheating. Now, I can always when tell he is using because ofhis stuffed up nose. Who nose!
I hope he finds help and I hope you can get out without too much pain.