I (19M) am wondering when and how it would be appropriate to tell a (potential) partner (18F) about my past and present drug use?

TLDR: when and how to tell someone about non problematic drug use and I'm sorry if this is the wrong subreddit.

I'm wondering at what point in a relationship it would be appropriate to tell someone about my past and present drug use and how to bring that up and tell about it. Never to the point of danger or addiction but I am referring to "hard" drugs.

I really apologize if this violates this communities rules in any way but I feel like it is something I should bring up sooner than later and I'm not sure where else to post this question. If there is a more appropriate sub for this question please let me know and I will immediately delete this post and move it.