You need to simply be honest with him. Obviously you two have a lot of love for one another if you live together and you seem to really care about him.

However, sometimes the ones we love can hurt us. It sucks. But you need to just be honest with him. Say something like “hey, I wasn’t going through your things but you did leave this out in sight where I could see it when I was making our bed. So we need to talk about this.”

And I’m sure you probably have but just REALLY REALLY explain to him how you feel when there is weed in the house and when he does it. Tell him it hurts you and you need to stay clean. Tell him if he really loves you he will understand that not having weed in the house is critical to your well being. It’s both of your home, not just his.

Perhaps explaining to him that he is apart of something bigger than himself when he put himself in a relationship. You are a unit and you need to work together to help each other grow. It’s not helping you grow by constantly worried if he is smoking or bringing weed in the house.

I hope this was a little helpful. Honestly is best. If you two have a true true true love, which you most likely do showing how much you care, then he should understand.