the use of that drug is shrouded in shame, guilt and disgust and does bring with it embarrassment. That’s why addicts lie about it and minimise how bad it is. When they are in the grip of it, they can’t even see how bad their habit it. And half the time they don’t want to see, all they want is to get their drugs.
If he is saying he wants to stop but it’s too hard, he’s giving himself an excuse. Yes it is hard, but if you want to stop, you will. You will get professional help. People have stopped, and stayed clean.. but this road, it will always be paved with fear. Will he lapse? Will he take it again?
You have to concentrate on you first now. Until he can sort himself out. And trust me, no ultimatums work. I’ve tried them all. You just have to walk away until he can get clean and STAY clean for a substantial amount of time.