my guess is, if season nine is confirmed, eight will end with Barney's wedding, and Barney, with his (possibly) offscreen/uncast until season nine sister, will say "Have you met Ted?" S9 opens with the scene, but with her on camera, And that kids is how I met your mother. But you've listened this long, might as well hear how we got married w/e. If no season nine, then sister is on screen in 8 finale, Have you met ted? reshot clips of her at st patty's day party, his class, roommate thing, etc. And that's how I met your mother, maybe montage leading up to/including wedding, kids, etc. Obviously speculation of course.
XI Wiki


