Don’t worry, no major spoilers here! But Cobie Smulders shared some thoughts on the question with E! Online.

Smulders admits that she has no idea who Barney is marrying – or even when it’s happening!

I love our show because our timeline is so disjointed, so when you say that Barney (Neil Patrick Harris) is getting married, I don’t know where in our timeline that lies. We sort of give these sneak peaks to the audience and we sort of tease them as to what to expect, but I don’t know where that ties into present-day, which we’re doing right now. So, in terms of Robin and how she feels about Barney getting married, I don’t know because right now he’s dating Nora, he might be marrying Nora

Who do you think Barney is marrying? Nora, Robin, or someone else?