Nichkhun (left) and Yoo Jae-suk talk in SBS reality show "Running Man." (SBS)2PM’s Nichkhun is “happy” about his puppy-love relationship with Girls’ Generation member Tiffany, the K-pop ...

Feeling at ease after going public with his relationship, 2PM’s Nichkhun casually mentioned his girlfriend and Girls’ Generation member, Tiffany, on his Twitter. On April 9, Nichkhun had a 15-minute Q ...