Ok, maybe I missed something, and if that is the case just let me know, but when Sun was translating for Sayid what Jin was saying did she she say "He knows I betrayed him."? Was she saying that Jin KNEW Sun had slept with Jae?? Did it show Jin find that out and I missed it?? When he went in and delivered his message to Jae I kept waiting on Jae to spill the beans, but he never did that I heard.
I go the impression Jae thought Jin was there because of his relationship with Sun, when in reality Jin (to his own knowledge) was only there because Suns father ordered him to "deliver the message."
My question: When and HOW did Jin find out that Sun had betrayed him??