Holly Madison is attracted to "workaholics".

The former Playmate insisted her rumoured romance with Good Charlotte rocker Benji Madden is not as serious as it has been made out to be, but they enjoy spending time together when he isn't busy.

She said: "We're hanging out. We're getting to know each other. He's really an awesome guy, but he's in L.A. and I'm here. And he works a lot. My problem is I'm always attracted to workaholics and I'm a workaholic, so that doesn't make a lot of time for togetherness."

Despite her closeness to Benji, Holly - who is to be the subject of a new reality TV show 'Holly's World' - insists she has "nothing serious" going on in her personal life.

She added to E! News: "I don't have anything really steady or serious right now, so we'll see what happens."

In addition to her TV show, Holly is also writing a book about Las Vegas, where she is currently starring in burlesque production 'Peepshow'.

She explained: "There isn't much of a visitor's guide for younger people out there. So I want to do that, matched with some Vegas history and tie it into my show as well. It'll help people plan trips."