In a new episode of MBC's 'Four Guys One Girl' that aired on February 14, Kim Gu Ra took to washing the dishes while listening to music after having a feast of a breakfast. �At one point SISTAR's "Loving U" came on and A Pink's Eunji heard this from another room.

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She yelled, "You don't even turn on our songs, this is tyranny." �Honey Lee, who was taking care of mother Kim Soon Gwee's skin, sided lightly with Eunji, "What do you think you're doing?"�

Kim Jae Won then came into the picture, taking Kim Gu Ra's cell phone to turn on one of A Pink's songs instead. �However, as he was looking for a song, Kim Gu Ra said, "I don't have any A Pink songs. �Those are the songs I downloaded."

Not giving up, Kim Jae Won said he would turn on another song. �Kim Gu Ra asked why he was doing that as it seemed he had not heard Eunji's words, so Kim Jae Won responded, "Eunji is from A Pink." �However, Kim Gu Ra said bluntly, "Ah, she's asking why I put on SISTAR? �Their songs are not up to SISTAR's standard."

Eunji said, "I heard that! �I won't say that's untrue, but shouldn't you be on my side?" Kim Gu Ra said casually, "You might be good at acting, but when it comes to singing, it's still SISTAR."