Young Gu remember DaDa

When Diana took Young Gu by kisssing him which reset him back to zero nine I was super upset because he's back to be a programed robot. Every time DaDa tried to kiss him back he pushed DaDa away but sometimes he seems to remember the moments he shared with DaDa. When he fought back and turn off the engine and choose to be with DaDa makes me happy that he finally remembers DaDa and told her that all of his actions towards her wasn't programmed. ???