The question is pretty vague and could fit just about anyone, given the right amount of time and conditions. Maybe "P" types, with their non-traditional attitudes, might have a slightly quicker comfort level than non "P" but I'm going to say it has a lot to do with the individual person and how skilled they are at socializing and integrating their general "weirdness" into their repertoire. It also depends on the reactions of others, and whether they (care to) adjust and adapt to the situation at hand. Lots of variables to consider here.
Doesn't everyone get super comfortable with their partner?
I know my ESTJ ex found me too comfortable with him but we were mismatched and he had super high standards so I don't think he really counts.
My relationship with my INTP sometimes feels like we're trying to see who can do the weirdest most grossest thing, sort of testing each others limits with weirdness. I think there was only one thing I was like "dude, too far" to lol whilst he encourages me with my weird and stupid thoughts/ideas.