Now I get it

So the whole time travel thing is why he's so surprised when Nunnally says she's going to be a recepcionist. He thought that she was going to be a knight as she told him she was a knight!
Poor boy, he choosing to be a knight to find his first and one true love and then it was all a lie! (￣∇￣")
She told him he was gonna be popular with women and they would bicker a lot and he just did that, Nunnally self-sabotaged ╮(￣▽￣)╭