Idol group 2PM's Wooyoung revealed why he hasn't been as active in the entertainment world.

The March 26th broadcast of MBC's "Radio Star" featured actor Namgoong Min, singer Hong Jin Young couple, idol group 2PM member Wooyoung, actor Park Se Young couple, and singer Jung Joon Young. The show was a MBC "We Got Married 4" special, the guests shared some truths and lies.

During the broadcast, MC Kyuhyun started the conversation by saying, "Entertainment reps all say that 'Wooyoung's case is one in which he went downhill as he grew more mature.'"

Wooyoung then replied, "It's not that I've matured. I've just been more careful because I have a growing fear of appearing on an entertainment program and saying something I shouldn't say," and confessed his inner feelings.