I agree with the others, you don't end a marriage of 6 years because of AAS use, or because your husband is on forums..
There's got to be more to this, maybe she feels her needs aren't being met in the marriage, u say you've lied to her about stuff, maybe your behavor has damaged your relationship over time. Recentment can build up over time, & if she's kept these feelings inside for a while..... over time, it adds up...
Not saying it's all your fault, honestly, I believe in most situations it takes 2 to tangle..
We sometimes let pride, & recentment get the best of us, I've always told Mr P, never go to bed angry at your spouse, talk it out, whatever it is & how ever long it takes.
You really need to evaluate if your your AAS use is worth it, if this is why she's ending the marriage, but honestly, there's probably other issues.
Talk to her, & listen to what she has to say, marriage counseling could really help.
Good luck.... hope it works out.