Dunno,I am a drug addict. Have been for 20 + years, all my friends are men.
My fella wants me to be safe when using, (I use heroin) but he for want to be around me when I do it.

In this instance his only options are end it, he won't.
Or accept these are just friends, which they are.

I have personally rarely done something high that I wouldn't have done sober.
Mostly I think that's convenient lie people tell themselves to justify bad behaviour.

Personally I would tell him to come back when he is clean and sober, but that you can't promise you'll still be there.