You used SD before you knew the answer to that question? That was smart.
Anyhow, it has to do with low test/estrogen levels caused by negative feedback to your HPTA. In simple terms, your body stops making test because it thinks the AAS you are taking is the real deal and there is no reason for it to continue production. That in turn causes lower estrogen since test aromatizes into estro. Low test/estro = low libido. It can get worse during PCT before it gets better. If you had actually done some research before taking potent steroids you would know how to avoid/correct it and already have what you need in your cupboard. Search button is right up by the new posts button. Grab a cup of coffee sit back and gleen from the numerous threads you will find regarding this topic. Enjoy.
Oh yeah, I've been dying to say this: Stupidity is not a crime, so your free to go.
Just messin bro.