Soyou and former KARA member Nicole had a fun time hanging out on tvN's 'On and Off.'

In the latest episode of 'On and Off,' Soyou shared her daily healthy lifestyle and home. She toured the viewers on her well-arranged closet and cozy bedroom. (per Soompi)

Soyou called her friend Nicole upon going back to her home from surfing. In a separate interview, Soyou shared that she has been friends with Nicole for ten years. They became close after Soyou's debut when she asked Nicole if she has eaten already, wanting to eat delicious food because she's no longer on a diet.

Nicole mentioned during her visit to Soyou's house that it's been long since they have hung out together. While watching at the studio, Sung Si Kyung commented, "I think it's been longer for us," talking about the fact that it's been a while since Nicole has appeared on Korean TV.

The girls immediately began eating at Soyou's house, and Soyou surprised the cast for her high tolerance for spicy food. The hosts started to comment that the two singers are not exchanging conversation, and Girl's Day's Sojin exclaimed that they are close friends because they are comfortable enough to be silent.

After the girls were done eating, Soyou taught Nicole the choreography of her new track, 'Gotta Go.' And Nicole, as KARA's former lead dancer, memorized it immediately.

Soyou explained in the studio that she was amazed after Nicole quickly followed her actions without even having dance mirrors. "I can't do that!" Sojin exclaimed. "It's hard to identify left and right movements without a mirror."

After practicing the choreography, Soyou sat down and expressed that after turning 30 years old (Korean age), she feels like she is sweating more. Nicole responded, "Is it always like that?" Soyou jokingly replied that it is her first being 30, so she doesn't know the answer.

Moreover, Nicole and Soyou also talked and exchanged jokes about marrying at 30, considering the lyrics of the song of SISTAR's "Give it to me," with the line "I wonder if I'll get married after turning 30."

"We'll have to change now the lyrics. Won't we marry before we turn 40?" said Soyoung.