Luna: … to tell me how to get to the Omiscan Temples.
Héctor:  The ruins? Why do you think I would know that? 
Luna: I know you all consider the temples sacred, but I'm no tourist. I just need to know where the trail begins.
Héctor:  Look, I cannot tell you that…
Luna:  It's okay, you don't have to tell me.

She uses her telepathy to seek the information directly from his mind.  After she finds it, she erases his memory of her.  He won't remember this ever happened.