Partner and drugs

Hi Coaches,

If my partner is doing drugs, and he’s only doing them when he’s not with me (he doesn’t show up in my life on drugs/high), what do I do? I think it bothers me. Do I draw the line based on my values because drugs are not for me? Or do I work on my own self because I can’t control him. But I AM in a relationship with him, and his actions can have consequences in my life. What do I do here? And what questions should I ask myself to get to my answer?