Tren has a real impact on some people's chemistry -- like Bmom said - AAS is not an excuse to allow yourself (himself) to go off on you or anyone else - if he chooses to use something that knowingly alters his ability to handle things, then it is completely his problem and not yours. I.e. not your responsibility to feel like you are egging him on more & you need to stop -- its all him and its all his chemistry.
By the same token, if he's cycling, there is a discerniblel change in his demeanor & handling of temper, but he won't admit that it could indeed be due to the drugs (esp tren), then he's not even aware. I've seen that as well. Unless he's open-minded enough to at least admit that its possible, then you also have a problem.
RE: tren - let me dig up a couple posts on this....