Healthy Relationships Support Group
No relationship is perfect. A long-term relationship requires constant effort to understand each other, fix misunderstandings, solve problems and continue to grow as both individuals change and evolve. How we deal with our misunderstandings is the focus of this community. Join us to find support, get advice, and share your experience with your relationship.

If you don't smoke a lot of pot (not every day), you could just bring it up in a casual way, something like, "Yeah actually, I do smoke pot occasionally, it helps me relax, helps my pain...." and then just see how he reacts. He might be completely fine with it. This would work if you are only an occasional pot smoker.
If you smoke every day, multiple times a day, then you should tell him now. You said he is conservative, so he may or may not be okay with this. I wish you the best. Good luck.
Nice to meet an easy going guy that you like Catin…. Let us know how it goes.... Big hug....xo
If pot smoking is a deal breaker, he needs to find himself a non-smoker.
If he wants to continue dating you, the onus is on him to change, not you.