Cho Seung-woo and Kang Hye-jeong appeared together in public for the first time since rumors surfaced about their relationship at the premiere of the movie `Marathon` on Jan. 18. The two stars have been going out together since they met each other for the first time at a party.  But but so far, they had never appeared in together publicly together because, each of them hasboth having been busy with starring in musicals and movies. At the premiere of `Marathon,` Cho and Kang sat side by side, chatting and holding each other`s hands.

In `Marathon,` Cho Seung-woo showed off his outstanding acting skills by perfectly portraying an autistic 20-year-old man with the intellect of a 5-year-old in `Marathon.`.