For fans of How I Met you Mother, the wait to meet Ted's wife has been a long, if times excruciating one, but nobody could be waiting as long as those kids of his. The pair were teenagers when the series began back in 2005, so must be WELL old by now (you know... in context).

The one thing we've always wondered about, is just how in the hell they were going to swing that one? The show still goes back to the kids every so often, who are usually just sitting there nodding along and rarely say anything anymore - but surely they would need to have a reaction to the big reveal of just just how their dad met their mother?

Turns out show co-creators Carter Bays and Craig Thomas already thought of that, and filmed the scenes 8 years ago! So all this time, they have actually known where it was going. Huh. Certainly didn't seem that way at times. The two actors who play their parts - David Henrie and Lyndsy Fonseca - filmed the two minute closed set scene with only one camera operative back in 2006, and signed nondisclosure agreements after.

Bays told "It's been the plan all along," he said. "What you see on March 31 has been the plan. We leave the series with a certain message that we wanted to convey."

Viewers have of course, already met the mother, who is played by Cristin Milioti (who is also in The Wolf of Wall Street, would you believe) but we have yet to see her meet Ted. The last episode is set to be the big reveal, with the rest of the actors scheduled to film the final episode on Feb. 28.

This BETTER be good, if not I would like the last nine years back please, Mr. Bays.