K-Pop sweethearts Nichkhun of 2PM and Tiffany of Girls' Generation are currently busy with their careers, preventing them from seeing each other lately.

According to KpopStarz, the high-profile couple is working on the promotions of the new album of their respective K-Pop groups. Male idol group 2PM is busy promoting their new single and album "Go Crazy," which was released on September 15.

"Go Crazy" is a song with party vibe and its music video released earlier features the six idols (Nichkhun, Jun.K, Taecyeon, Wooyoung, Junho, and Chansung) dancing with intense energy. The highlight of the video is the "motorcycle dance." The single is on the top slots on Korea's music chart this week.

Tifanny, on the other hand, is busy preparing for the second mini album release of Girls' Generation's unit group, TaeTiSeo, where she is a member. Along with Taeyeon and Seohyun, the trio released their single "Holler" on September 16.

"Holler" has a funky dance tempo and a positive message about pursuing one's dreams. The music video, already has 1.7 M hits after it was posted on SMTown's official YouTube page on September 14.

The fact that the two idols released their new songs almost at the same date caught the attention of the couple's fans as well as the supporters of their respective groups.

Meanwhile, in a recent interview, Nichkhun addressed issues that the two are not anymore together. "We are fine," said the K-Pop idol. "We are very busy, so it has been quite a long time since we met up. I think the last time we met was in early August."

The other members also shared their insights about Nichkhun's relationship with Tiffany, saying that it has no adverse effects on their group. They said that Nichkhun can now do music easier.

Moreover, Taecyeon expressed that he is not jealous of fellow 2PM member. In an interview with KBS show "Entertainment Weekly," he said, "I don't really envy Nichkhun. As far as know, the couple does not see each other often due to their busy schedule anyway."

Nickhun and Tiffany revealed about their relationship back in April.