> By definition, insanity is doing the same thing over and over again expecting different results
That's a pithy cliched phrase, but it's not the definition.
One really needs to read through the DSM (it's a flawed political document firmly embedded in the prejudices of its day (i.e. today) that's more pre-scientific taxonomy than science), but the short version:
Insanity, craziness or madness is a spectrum of behaviors characterized by certain abnormal mental or behavioral patterns. Insanity may manifest as violations of societal norms...
He changed his sleeping routine and had a homosexual relationship, found out they didn't work out for him, gave up on them. Nothing insane about that.