.: Rariouge :.

Come on, you can't say Rouge and Rarity don't have anything in common XD
These two have a lot of common;
Both have the love for jewels
Both represent beauty
Both are purple
Both names start with an R
And the list goes on
If these two were to meet, I think they'll get a long very well
I might match up the other Sonic characters with the Ponies.
Sonic & Rainbow Dash
Tails & Twilight
Amy or Charmy & Pinkie Pie
Cream & Fluttershy
Bunnie & AppleJack
Super Sonic & Super Rainbow Dash
Hmm that's all I can think of XD
Hope you like it ~