Though we probably shouldn't have ruled out anything given the past couple of years on 'Two and a Half Men', but we really, really didn't see this one coming. According to The Wrap, Ashton Kutcher's character Walden is to propose to Jon Cryer's Alan in the show's final season.

Two and a Half MenMila Kunis [L] guest starring on 'Two and a Half Men' with her partner, Ashton Kutcher [R]

"Walden has a near-death experience," CBS entertainment chief Nina Tassler told the industry website, "It forces him into sort of this existential quandary and to evaluate the meaning of his life, the quality of his life, which prompts him to say, 'I need to put down deeper roots.' And he wants to adopt a child."

"You know [showrunner] Chuck Lorre," Tassler said. "There is no topic that he won't dive into and make a part of the public conversation."

Clearly it will be a faux-wedding for comedic value, though when asked whether she expects controversy over the plotline, Tassler replied: "It's going to engage people who perhaps have not wanted to be part of this conversation before," she said. "The reality is it is legal, same-sex marriage, and it is legal for you to adopt a child and that's what they're doing. And they're doing it in a very public forum. It's a ruse, but the reality is it is legal and it may engage viewers who haven't necessarily wanted to talk about it before and people will be talking about it."

We know that Chuck Lorre has a number of tricks up his sleeve for the show's final season, though Tassler ruled out the return of Charlie Sheen - as had been rumored.

"We are not having those conversations right now," she said.