B.B.B.F.F. Appreciation Post
I vector them a lot. I love having Shining Armor and Twilight Sparkle together, but not in the sick incestuous way the Internet traumatises people with.
Having him show up only at the end of the second season helps to amplify the fact that Twilight isolated herself so away in her studies with her exile into Ponyville, with the sense of how close they were when they were younger in Twilight’s B.B.B.F.F. flashback.
I love the idea of Shining Armor being the best brother a pony could have, with him being there for her all the time to turn out into the brilliant pony she has become.