They did bring back Nora this season. She had a brief appearance in Slapsgiving 3.

Something must have happened after the wedding to make him change his mind.

I smell spin-off!!! haha!

All the years of mystery were nice, but I like the way the reveal was executed. They went all the way back to season 1 to show Barney's break up with Shannon, and we got to see just how badly it has affected him this whole time. Then, when Ted asked him how he feels about getting married, we got to hear how much…

i thought it was messed up too, but they made up for it with the puppies. haha!