if by hilarious humor you mean the same kind of humor that you find in EVERY FUCKING ECCHI MANGA EVER, then I agree with you entirely. Otherwise you are a faggot.
Again, if you weren't such a mongoloid knuckle-dragger you would have noticed that I didn't care about the relationship necessarily as much as how they got there and how it was handled overall. It was completely sub-par when compared to how it could have been handled. An arc completely saturated with sexual humor on the level of a piss-poor doujin writer is just bad.
A relationship arc that largely took itself seriously and consistently held up the whole "human drama" thing I wouldn't have had much of a problem with (although I had a problem with how he got to that point).
But, like I said, the humor is just plain bad. I don't think I laughed once through the whole arc. It wasn't particularly funny and took away from the main point of the story.