it seams in the end of episode 4 he knew it all along. what do you think?

He knew who she was when he first saw her in the elevator.

 Rien:

He knew who she was when he first saw her in the elevator.

I don't think so. he says that when SML recognized her in the market, it was then that he made the connection.

 MahekShamsukha:

I don't think so. he says that when SML recognized her in the market, it was then that he made the connection.

He saw her family photograph before that, and saw her for the first time in the elevator If I remember correctly. So he knew how she looked.

 Rien:

He saw her family photograph before that, and saw her for the first time in the elevator If I remember correctly. So he knew how she looked.

i agree, add to that in the last episode, he mentions he also feel in love with her in the same elevator.