It is Canon.... (Patreon)

That if, either Ino or Sakura had been a guy, the other would have left their husband for them.

Yeah. Really. It was in a canon LN. Can't find the direct quote, but its said that they love each other more than anyone else in the world. Possibly as more than just friends. But they never acted on it due to them both being girls, or so it is implied.I just found this out recently. And you know what I say?

COWARDS. COWARDS, THEY ARE.Just wanted to say that. Take this as you will.

But it is interesting that BW could have been canon in some way, isn't it?