Actor Christian Slater is engaged.

The Robin Hood: Prince of Thieves star announced he is set to wed his longtime girlfriend Brittany Lopez during an appearance on U.S. Tv programme Late Night With Jimmy Fallon on Wednesday (27Feb13).

After confirming the news, Slater described his first meeting with Lopez in Florida, saying, "I went down to Miami a couple years ago, stayed at this little place (resort) called Little Palm Island... and this girl came walking along with another lady, a slightly older lady. I was sitting in my usual spot, eating my oatmeal that morning... and this spot was famous for people proposing to each other... and next thing I know she gets down on one knee and proposes to this older lady...

"I thought I had just witnessed a nice lesbian engagement, so I was coming over to say congratulations, but it turns out it was her aunt and she was just trying to help her aunt capture the beauty and the romance of the moment. She was making a joke, and I witnessed it, and it intrigued me, and the next thing I know we were hanging out in the Everglades."

This will be Slater's second marriage - he divorced Ryan Haddon, the mother of his two children, in 2007.