Dude, this is a great post. Since the moment I felt things were moving ahead in my current relationship, I explained and came out about my use of even just prohormones.
I think, if you demonstrate honesty and open mindedness with your significant other, they will tend to be better listeners in regards to anything you have to tell them.
She's wonderful about it all actually, even when I explained that I have been researching and considering AAS. Shit! now, since explaining my diet to her and how dedicated I want to be with this... She won't even let me think of eating out of my plan. Incredible girl really.
3J is completely right about this. The moment you feel your relationship is moving forward into a more serious zone, disclose everything! It may shed light on something you've missed in the past and save you a lot of grief later.
Excellent post again! Important topic I think.