Charlie Sheen wants to have children with Brett Rossi.

The Anger Management actor - who already has grown-up daughter Cassandra with former girlfriend Paula Profitt, daughters Sam, nine, and Lola, eight, with second wife Denise Richards and twin sons Bob and Max, four, with former spouse Brooke Mueller - is "open" to having kids with his 24-year-old fiancee, but says they don't plan to do so just yet.

"I'm having way too much fun with her right now. So much fun it should be illegal," he said.

The 48-year-old actor also says Brett has spent time with his sons and they adore her as much as she loves them. Though it has been reported the former Two and a Half Men actor - who has an estimated fortune of $125 million - will have a pre-nuptial agreement with Brett, he insists he doesn't want a "formal" arrangement because "pre-nups poison marriages." When asked what their pre-nup will say, he replied, "You keep your s**t and I'll keep mine."