Korean Silent Love Song: Confession of Sign Language

I am sure all Deaf malaysians love to watch Korean drama, especially Deaf ladies and married women! They always talked about the romantic korean drama, and wish to get their best prince or romantic guy! Haha. I used to download internet and watch many romantic drama and movie from South Korea and Japan when I  studied in Multimedia University (MMU). But, I don't remember what title of drama that I watched before.

I found the youtube shared on my friend's Facebook, get two songs related with the sign language; Part 1 and 2 but, I don't know what title of Korean song...

In the Part 1, there are 4 close friends who graduated in same university. She fell love on his close friend who married with a smarter girl. At same time, another guy also fell love on her. She never aware that another guy who helped her so many times, and encouraged her always, but she always think about his close friend only. Another guy confess his love to her but she rejected him because she really loved his close friend. That is why she still want be together with his close friend when she always follow him and his wife always go to anywhere, another guy join in because he cares her always. Finally, she found out to be Deaf / just pretend to hear only, his close friend know her secret only because they sure share everything, expect his wife and another guy. His wife also not happy with this too. Another guy still want to close with her but, she still walk away from him! *Sorry, I don't know what are their names.

Part 1

Part 2, The reason; she become Deaf when she was in accident car. She just know about another guy who do everything for her, but she unable to reach him because her love on his close friend only. In the accident car, another guy is HERO to her because he saved her! But, he still cannot tell his close friends about he will become blind or something...? He always think about the others and make her happy always. Finally...he fell down...The ending? Who knows?

Part 2

After you watched the Part 1 and 2, what lesson that you learn from this? 
If you love a guy married to another lady, will you be happy when you be with him? Why your heart also be cry and hurtful when you see him and his wife so always? If he also be alone with you, you sure happy la. It's normal for girls who need love. He's married, cannot return his feeling to you, but he still can be with his wife and you so easily. 
If I am her, I still won't choose him la because he is belonging to his wife only, and I should be open to friends, and learn to love another guy, when I know him always support, come to help to my side, and encourage me on many times. 

"You must to find new happiness for yourself, not for your close friend or who you loved - fell love or married with other lady, remember. If your friend love and care you more, you are lucky!"