"This is it. This is happiness."

The Property Brothers Drew and Jonathan Scott
Credit: Courtesy of HGTV

Professionally, Property Brothers' Drew and Jonathan Scott have it all—a hit HGTV series, two spinoff shows, a forthcoming book, and their own home decor line—but it's their personal successes that mean the most to the housing heartthrobs.

The 38-year-old twins recently sat down with People to talk about their personal lives, and why they still live together—for now at least.

"This is the most humbling, unexpected, fantastic place to be in my life," Jonathan tells People of his relationship with girlfriend, Jacinta Kuznetsov, who works as a development producer at for the brothers. "I've never been happier."

Drew, who got engaged in December to fiancée Linda Phan (who also works for Scott Entertainment), says he's in the same boat. "I've always been focused on work, so to have this beautiful woman in my life and knowing we're going to get married, it's amazing."

Jonathan has been married before, and he moved in with Drew when that brief union ended. Even after Phan moved in 2012, the brothers remained roommates. In fact, they still share a home. "People were always like, ‘Isn't that weird?' But there's an ease to it," Phan tells People. "You wake up and you go to work. It's nice and really convenient to be able to have meetings with the people you live with."

The brothers' shared home in Las Vegas has since become more of a family compound. They both say they hope to expand their families in the near future.

"I'm definitely looking forward to having kids," says Drew. "Linda and I have talked about it, and we've considered adopting."

Jonathan feels confident he'll be a great dad. "I love kids, and I get along great with kids," he says. "Plus I'm very immature, so that helps."

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In the meantime, they're happy to soak up their current situation. "If I had to picture what a joyous life is, it would be working with my family [and] having a beautiful partner who supports me and has her own passions," says Jonathan.

"This is it," adds Drew. "This is happiness."