Incredibly Overused Subject. But who do you ship each member of the Mane 6 with that actually makes sense? (Spike Included)

Not specifically "what headcanon ship do you like the most", but more "which ships actually makes the most sense for each character that you could actually see realistically happening in universe.

(E.g. Fluttershy x Discord, or Pinkie Pie x Cheese Sandwich)