Charlize Theron and Sean Penn are reportedly keeping the end of year engagement trend going, with Penn proposing in Paris last month.

The rumored engagement comes as a bit of a surprise considering Theron’s previous comments about her lack of desire to get married, but a source said they are definitely “committed.”

Insiders told Us Weekly they simply "decided to take their relationship to the next level.”

The Oscar winning actress told Vogue in May she’s never been one to plan out her wedding day. Appropriately, Penn reportedly didn’t give her an engagement ring.

“Let's put it this way: I never had the dream of the white dress. And watching other people getting married? I think it's beautiful for them, but to be quite honest, usually I'm sitting there just devastated," she told Vogue. "It's supposed to be this night of celebrating love, and all you see is a couple separated all night making sure everybody else is okay. It just looks like a lot of work. And as you get older, you start sifting through the stuff that really matters."

If the reports are true, this will be the third marriage for Penn – who was previously married to Madonna and Robin Wright – and the first for Theron.

However, it’s important to note engagement rumors have popped up before and they haven’t turned out to be true.

Theron and Penn started dating in December 2013.

image via INFphoto.com