I just realised something. In s2, brian tells Justin ‘sometimes a man needs to know when to accept help.’ when justin quits his job and they are in bed, brian asks him why he did it, and justin reiterates ‘a man needs to know when to ask for help.’
THEN in s3, justin tells brian ‘sometimes you have to [sacrifice everything] for what you believe in.’ then later, in that same bed, justin asks brian why he paid for those ads, and brian reiterates, ‘some asshole told me that if you believe in something strongly enough you have to be willing to sacrifice eveything.’
they BOTH have taught each other so much and are constantly learning from the other. in this sense, it is such an equal relationship.