After shahzadafzal posted stats about your and S_Therapist activity I would say that you're not alts. But it's just my opinion, I may be not right.

But one thing looks quite strange in this story - why S_Therapist stopped to defend himself. Maybe he just give up on this account. Proving that he isn't alt of you will not fix his reputation because he is already tagged for other shady things. Wouldn't be surprised if he will start with new account soon.
And maybe it's stupid prediction, but I think it's possible that his account is controlled by more than one person. I just don't believe that normal people can live almost without sleep.

I had joined in a job