No, if you pick all the yellow ??? choices, you end up with the asking Zack to be boyfriend path.something missing i clicked on all the yellow ??? Route but i still end up with the going to ask Zack to her boyfriend.
i even restarted the game fully still the same there is something missing.
If you picked all the other choices, you would end up with the threesome path, but that path is not in the game yet.