Credit: Richard Cartwright/ABC Television Group © 2012 Disney Photo: Beckett Approaches Castle on the Swings in Castle Season 5 Finale: "Watershed"

The cast of Castle is scheduled to start filming Season 6 in a matter of weeks (on July 9, to be exact) and Stana Katic recently revealed that she knows whether or not Beckett will accept Castle’s marriage proposal, but her on-screen beau isn’t as lucky.

According to TV Line, Nathan Fillion has no idea what Beckett’s answer will be (really, he has no clue), but that doesn’t mean that he isn’t looking forward to what the new season will have in store for Caskett. We already know that Season 6 will be “complicated” for the duo, but Nathan has no problem with that.

“That’s one of the things that Andrew has done very well, in that it’s very realistic that two people who really ought to be together maybe don’t see it. Or the timing isn’t right,” he dished. “These are things that happen in real life. That life gets complicated. That it can never be easy. This is something, I think, that we can all relate to. It’s a truth in that everyone is comfortable with.”

So while Season 5 was like a lovey-dovey honeymoon phase for Beckett and her man, it sounds like Season 6 will really delve deeper into their relationship, which has already begun to get stressful.

Are you ready for some rough Caskett times ahead? Tell us your thoughts below!

Source: TV Line