No, I said it was not impossible. But it is clearly not the case in this instance, as you yourself said that the problem he has is committment issues.
To assume he does it to get a high, which is highly bizzare, when there is a perfectly normal explanation is not very nice of you.
As far as whether he should be dating, I assume he discusses it with his therapist, which I assume he has.
But really, the poor guy wants to get married. He keeps trying to make a relationship, and it never works for him.
And then on top of that he has people like you acting like he is a complete rasha.
I feel bad for him. I don’t feel particularly bad for your friend. I do feel a bit bad for you.
And now you call him an “immature nerd”.
Just why is he immature OR a nerd? Having commitment issues is not related to either.
However, castigating people for their emotional issues which are ruining their lives- is pretty immature.