pyromaniac_811
I thought people usually paired Hakkai with Gojyo and Sanzo with Goku since Goku called Sanzo and Hakkai lived with Gojyo for a while....meh, whatever...
A lot of people do, yes, but that doesn't make anything so.
So Hakkai lived with Gojyo for so long. The series doesn't hint at all to something happening in those years.
And, it's a pretty common opinion among 383 fans that while Sanzo and Goku share an absolutely endearing master/student, father/son relationship, it is that and nothing more. What Sanzo and Goku share seems to be very delicate, and for them to take it to that step would surely ruin the balance that they have. Goku's much too young and unexperienced, and, well, Sanzo's unexperienced, too, and I don't think he would be capable of giving Goku more than he does now.
It's kinda sad, because the 383 corner of the fandom is usually regarded as the poor little sister or the black sheep... It's a shame.
sad