Nick Jonas has said "goodbye" to his days of purity.

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Although the singer, along with his two brothers, Joe and Kevin, used to wear a purity ring, symbolizing his abstinence, he is now in a serious relationship with beauty queen Olivia Culpo, and recently looked back on his decision to embark on a new way of life.

"I'm comfortable enough to talk about sex and other things in a way that is transparent and, I think, more relatable - because this is who I am as a man," Jonas explained to The Sun, according to a report by In Touch Weekly on Wednesday. "It's a very strange thing when I look back. There are times I'm surprised I didn't lose my mind. But it was part of my journey and me trying to do the right thing."

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In August 2013, Jonas began dating Culpo, 2012's Miss World, after a handful of relationships with some of Hollywood's hottest young stars, including Selena Gomez and Miley Cyrus, and singer Delta Goodrem.

Months after Jonas and Culpo began dating, he was met with the inspiration for his latest single, Jealous.

"Someone kept staring at her and it was kind of uncomfortable because we were clearly on a date. It was such a disrespectful situation," he recalled. "We were at the beginning of our relationship, so I would have those moments of feeling nervous and jealous. It's vulnerable and it's a weird position to be in. But instead of getting frustrated, I went to the studio and wrote the song the next day."

Jealous was Jonas' debut single off his new self-titled album, which was released in November 2014.