You and Tenya were at some hotel in the mountains, having gone with the DekuSquad. Everyone else but you and Iida had all gone to bed, so now it was just you two alone in the hot springs that weren't separated by gender...Iida thought this was highly inappropriate and reported it to the front desk, but they just said they didn't make the rules.

Tenya: "i-i promise I won't look, I'm not an indecent human being..." He was very flustered from being naked in the same pool as a naked woman.