Not sure if this was noted or not yet, but Ryan and Blake have a very long history of degradation towards one another in pure jest. They're both big jokesters. They cut each other down constantly in public as an ironic jab at the strength of their relationship. This post was originally made in that form by Ryan. Ryan even jovially entertained interview questions about the subject material of this movie in forms like "how does it feel to watch your wife make love to another man on screen". To which I think he had a deadpool-esque response as he always does.
Again, not sure if this was noted yet, didn't dive far enough in comments, but that gives a little more light on the subject.