I am going to be starting a bulking cycle soon, so I talked to my wife about it. The good thing about being on TRT is that she already sees some of the wonderful benefits of anabolic steroids. I have also told her many of the things discussed on this forum, showing her that body builders can (and often are) very well informed people. She has seen how much I have learned from here AND how little my doctor actually knows...since doctors are the benchmark for medical knowledge, any place that knows more than the average doctor MUST be good, right?
Along with telling her the gains, I also told her all the risks (well, the ones that actually have a chance of happening)...and then what will be done to mitigate those risks. One of the reasons I married her is because she is quite brilliant. She asked pointed questions, I had answers to most, researched the rest. She is cautiously on board with it, but reserves a veto right she can call in at any time if things appear to be spiraling out of control and I do not see it (or choose not to stop it). I can easily live with that - she has my best interests in mind. She has seen my transformation under 3Js guidance so far, so any cycles will also be under his guidance. Balancing this is my past problems with Androgel. I was one of the lucky 1% who got the mental side effects of anxiety, dysphoria, depersonalization, fear, and paranoia. Try telling someone that they are having horrible side effects when there is also paranoia involved...yeah, not good at all - she was out to get me, not help me...
Important things should never be hidden in a marriage. You should also never have to be someone you are not. If you use gear and work out hard, that is a big part of who you are and your spouse needs to come to terms with it. But most of it is on you, not your significant other. You need to present it properly and to show that her feelings really are important and DO matter. Kindness and empathy goes a long way.