I know he has done drugs when he was younger - but only recreational with friends etc. He is now in his 40's with respectable job and two children. I am convinced that he is using coke sometimes, as he is a terrible liar and often comes home with one bloodshot eye, saying he got dust in his eye, or last night it was that he had been at the pub and had a bag of peanuts and rubbed salt in his eye. Also on these occasions his breath has a sort of metallic smell. When we first met about five years ago, we went out to a big event and he went off to get a drink for us. He came back about half an hour later with no drinks! But rubbing his nose and sniffing. I was fuming but didn't know him well enough to confront him at the time. Also we went to a friends wedding 2 years ago and he went off to the toilet for ages then came back saying that he had perked up a bit and he was quite restless. I probably ruined my friends wedding but I confronted him this time and he said I was being ridiculous and that he hadn't done that in years, but I know for a fact that other people at the wedding were snorting coke (he knew nobody there so not sure how that all came about.) Anyway just not sure how to tackle this. I have tried to just forget about the occasions I suspect as I know I can't prove anything, and if I say anything he will just deny it and we will have a massive argument. I know that if I am right then it is only occasional use, but still.....I don't want to be with someone who is lying to me and doing drugs when we have a family. Or does anyone think he's telling the truth????!