Do men actually go through midlife crisis ?

I hope if he does or did have one, it was minor. He does have to supplement his testosterone now, probably because I keep draining it out of him. But I know he didnt like that and it bothered him for a while. We are a very active couple in love and neither of us have the time or desire to sit around and wonder or lament "what might have been" with someone other than each other like so many middle-aged couples tend to do.