Melatonin production stops once you start taking it artificially. American melatonin also can have fucked up stuff like melatonin tablets 1000% being over the shown amount it should contain.
The issue is that you are already negativaly conditioned by faliure. I got empathy for the guy.
When I start socializing with women, I already feel extremely dreadful, like I already failed even before I get negative response. I wouldnt want this for the worst of my enemies.
I dont think you need to push him to conform to how you would talk about women. You are in a completely different situation.