There's no doubt Gerard Butler** is a ladies' man!

While telling stories from his travels Monday, Dec. 3, on The Tonight Show, Butler mentioned his "girlfriend" twice, which caught host Jay Leno**'s attention.

"You mentioned this girlfriend twice," Leno said. I've never heard you do that . . . give me a little information on this. Can I ask you how long you've been going out?"

"It's been seven months now . . . it's not a record," Butler, 43, joked.

The Playing for Keeps actor dating actress/model Madalina Ghenea, but he wouldn't comment any further.

Butler then met Leno's second guest, actress Olivia Munn, for the first time -- and got a little flirty!

Munn, 32, told a story to Leno about about a motorcycle accident that resulted in a scar on her leg. "She still has great legs though, huh?" Butler said.

Leno later showed a very sexy photo of The Newsroom actress in Vanity Fair posing by a pool. Butler joked, "Pool party [at] Olivia's house."

This article originally appeared on Usmagazine.com: Gerard Butler Flirts With Olivia Munn, Talks Girlfriend of 7 Months on The Tonight Show