Colton shared the photo of them smooching in the UK,
writing, "What happens in the UK stays in the UK…or does it? ? #thearoy #arrow."
Their characters, Thea and Roy, dated on the show, so maybe this kiss came at the request of some ardent Thearoy shippers? If anything, it seems like the actor may be teasing his character's return, which would be pretty amazing. Their onstage smooch, though? Still kind of epic!
Did this photo shock you? Sound off in the comments!