Singer Siwon of the 12-piece K-pop boy band Super Junior doesn't think anyone should start dating until they're ready, but says he's ready for physical contact after one day with a woman.

Appearing with his Super Junior bandmate Ryeowook on the South Korean radio program "Kiss The Radio" on Friday, the singer (whose full name is Siwon Choi) opened up about the dangers of dating too young.

"When you're a student, it's important to stay grounded," Siwon said. "It's not late to start dating after you become an adult."

Yet when it comes to his own personal romantic life, the singer, who Billboard claims is the most followed Korean on Twitter, says he was born ready.

"I only need one day [to become physically intimate with a woman]," Siwon admitted, when given the choice between a day or a month of courtship.

"If a man is confident, he can approach her first,"

According to Ryeowook, Siwon has that kind of confidence.

"Siwon normally likes [physical intimacy]," Ryeowook said.

"He behaves like he's from a foreign country."

Super Junior's ladies' man also discussed his first love.

"I experienced my first love when I was in my third year of middle school," Siwon said.

"My father was pretty strict, so I disobeyed him. Now that I look back on it, it was a good memory, but I regret it...I'm normally the one people break up with first. If my feelings change, I am the type to tell her honestly. So I [asked] my girlfriend at the time to break up [with me] first."

Super Junior has been on the road for their "Super Show 5" world tour since March.

The band recently played shows in Brazil, Argentina, Chile and Peru, capitalizing on the South American K-pop craze.

"South America was amazing, very powerful," Siwon told Billboard Magazine last month.

"We didn't imagine they like K-pop there and they loved it! The fans always make amazing moments for us. I just have to mention how appreciative I am."

This summer, the group will head to Japan for a pair of shows at the Tokyo Dome on July 27 and 28.

That same week, the group will release their first Japanese studio album, entitled "Hero."

The album will feature Japanese versions of past Super Junior hits like Sexy, Free & Single," "Bonamana," "Mr. Simple," "Opera," "Our Love" and "Way."