I see we're talking shipping.
My fave ships are:
TwiPie (because the lolz)
CheeriTwi (because they seem like they'd actually fit pretty well)
RariTwi (another one I could see working)
RariShy (they're pretty close, it's not that much of a stretch)
RainbowShy (See Rarishy, and they've known each other a long time).
You'll notice I prefer mare/mare ships. I don't mind FlutterMac or CheeriMac either).
Yes, I know these conflict.
No, I don't care.
I actually once started a LAUNCH ALL THE SHIPS fic where each of the crushees had a crush on somepony else, but never got around to finishing it.Fun fact:
It's thanks to ponies I started roleplaying, and thanks to some in the pony community I found my trans-ness.
And before you ask, yes it was r34 RPing. It was that way from the beginning.