해요 말고 해 (A Little Close) is a single by boy group HIGH4 (who have disbanded on 2017) featuring musician Lim Kim.
According to HIGH4’s Youtube description, the lyrics talk about how a guy and a girl wish to get closer to each other even though it is awkward.

In Korean the ending 요 to a word make it formal. In the lyrics the two want to take off the formal ending in order to get closer: instead of 해요, just 해.