Hayato and Rin find themselves in danger of committing "indecent coed relations" while trying to stop another couple of students for doing the same thing.
I hope that doesn't mean she, 
uh, "helped" you once before...
Sie hat dir doch nicht etwa
vorher schon einmal „geholfen“?
Ne me dis pas
qu’elle t’a aidé avant…
significa forse che lo ha già fatto?
Não me diga que...
ela já ajudou você antes?