Eh...If I made a Pony OC, then I'd probably ship him with Pinkie. ...then again I'd rather have it all humanized but nonetheless...I actually feel bad for arguably the most annoying creature in all the dimensions.
Hmmm, I know a lot of us, including myself, are waiting to see Rarity hopefully get with Spike at this festival(which I'm assuming is what will happen hopefully). For Pinkie though, I think there are only two options I can think of. One: Bring in Braeburn for some reason. Two: Use Cloudtrail for a love interest. That's really all I've got.