The Beverly Hills, 90210 star took to Instagram to share a cryptic post about "feeling smothered" on Saturday, which was his wife, Megan Fox's, 34th birthday.
"Eventually butterflies get bored sitting on a flower for too long. They start feeling smothered. It’s a great big world and they want to experience it," Green, 46, wrote alongside a photo of a butterfly on a flower.
Green and Fox have recently been the subject of split rumors, and fans were quick to speculate whether the actor's post was about his wife. Fox has a tattoo of the quote, "We will all laugh at the gilded butterflies" on her right shoulder.