I posted about Charlize Theron and Sean Penn spending New Year’s together in Hawaii the other day – click here for a refresher. They’ve known each other for years. There was reason to hope that it was a friends-only holiday. But now even PEOPLE is asking the question: Are they dating?

Well, they watched the sun set together (click here to see) and then they returned home together – here they are arriving at LAX. After getting into separate cars, they ended up at her place. And he didn’t come out until yesterday wearing the same-ish clothes. So it went from her staying with him in Hawaii to him sleeping over at her house. Sunsets and sleepovers? At this time of year? Does that mean he can’t be friends with Madonna anymore?