Oh Boy - I hear your nervousness...My mother is an Alcoholic who has been sober many years in AA and I worry a bit lately about her, altho I know she is still sober...but I also Know there is nothing I can do about it if she drinks...
I also know tho - that Secrets are not good...What do you think would happen if you did ask him - If he is drinking - do you think he would admit it , or deny it and get angry, what was he like when he drank before ??
Someone with more knowledge will be along soon...
You've come to a good place to talk about this and get things off your chest...lots of people here in your position that can share their experiences with you
Janni