gpro isn't entirely wrong here. Of course, testosterone has an effect on libido, but it's not causal...meaning that high test doesn't cause a high libido and a high libido does not mean high test. I went to a doc a few months after I got off a cycle bc I had zero sex drive, literally. I was certain that I must have low test. Turns out that I had far above normal test levels.
Multiple factors contribute to a man's libido. I've been with very attractive girls which I had little sex drive for even if I was on cycle. I've been with less attractive girls that drove me crazy when I was off cycle. So, test does play a part but it is not the only contributing factor.