okay i cant remember almost any of this fic, except that it was SK, and i cant remember if this part... that i remember was based between SK or Rin/Ship but i remember the pair either or, going off with Bokusinho as a chaperon, and them making out or even getting a bit more then frisky. and Inuyasha getting all D:< !!!! about it, only to have someone tell him that Trees made for bad chaperons as they are naturally inclined to help people become lovers.

I remember it being an interesting story but that's literally all i can remember, maybe someone else has read it too. lil help?

This totally reminded me of this chapter of Unspoiled:

dokuga.com/fanfiction/story/2508/99

No Inuyasha, though, so maybe this wasn't it?

yup! that'd be it! :3