I really think there isn't a cuter couple than those two.
The characters are portrayed by 2PM's Wooyoung and solo-singer IU.
If you want to see all the Milky Couple-cuteness I recommend 'Dream High' once again.
Wooyoung said he was an ‘aspiring singer from Busan’, and said he wanted to sing a song for IU. So he song the chorus from 2PM’s “Again & Again“,
While IU listened on with amazement. Lee Soo Young was quick to pick up Wooyoung’s voice, and scolded, “Wooyoung, please stop!”, but IU still didn't know who this 'fan' really was , and commented that he sounded like Wooyoung or Junsu.