Everyone who has a friend that struggles to keep a secret. You tell them the smallest thing and suddenly everyone among your friend group knows.

Unfortunately for Big Bang's Taeyang, his friend that can't keep a secret just so happens to be one of the most popular artists in South Korea.

Recently, Big Bang's G-Dragon and Taeyang appeared on the Korean variety series, "Please Take Care of My Refrigerator." On the show, Taeyang was asked what G-Dragon's worst personality trait is. Taeyang explained that the rapper had a problem keeping information to himself.

"His mouth is really cheap. If you want everyone in the world to know and for something to become a big deal, you can tell G-Dragon," said Taeyang (via Soompi). 

Both G-Dragon and Taeyang laughed in response to the statement which hints at their lengthy friendship that began even before debuting in Big Bang. The boys have since done several songs as a subunit alongside their own solo projects, further solidifying their closeness as friends.

Taeyang and G-Dragon are close to finishing promotions with the rest of Big Bang for their 2015 comeback album entitled "Made." Big Bang released two songs every month beginning in May. The full album is scheduled for release this month, combining all the hit singles.

In addition to the promotions, Big Bang is in the middle of their "Made World Tour." They are scheduled to make stops in the United States and Canada in October. They will complete the tour at the beginning of 2016 with a dome tour in Japan.

As far as huge secrets are concerned, it's safe to say that both G-Dragon and Taeyang are able to keep things between each other. This is especially apparent when you consider how long it took to discover Taeyang's relationship with actress Min Hyo Rin and the mystery surrounding alleged on-and-off relationship between G-Dragon and Kiko Mizuhara.

In that way, both Big Bang member's lips are sealed.