I'm not sure what was going on with the switch to English either. At first I thought that they were just dropping the subtitles and that he would reply in English as well, but then he went back to Korean and so did she. All I can think is that she felt the desperate need to tell him what was on her heart, and yet couldn't bring herself to say it in Korean so she blurted it out in English.

And yeah, it is Korean, not Japanese.

LOL on STEVE DOE.