Only in fan stuff like fanfics or art. Obviously not in the show, since sonic is in no way related to mlp. But even in the fandom, most people don't think rainbow dash and sonic belong togerher. Most fans will pair her up with other characters from the show. eg Rainbow Dash and Pinkie Pie.
Not that we've been made aware of, no. None of the Main characters have any boyfriends.
Rainbow Dash has not been shown to have any crushes on the show.
Rainbow Dash the My Little Pony is not real but somebody probably named their horse Rainbow Dash.
No, it's a kid show
Pinkamena sits on Rainbow Dash in season 1 episode 25 "Party of One"
Rainbow Dash's pet tortoise is named Tank.
Rainbow Dash is a pegasus, which, in the MLP: FIM universe is one of the three main races of pony.
She is one of the main characters in My Little Pony.
Rainbow Dash is one of the main characters in My Little Pony: Friendship is Magic.
Rainbow Dash the My Little Pony is not real but somebody probably named their horse Rainbow Dash.
No, it's a kid show
No, silly filly, one does not simply, 'become as fast as Rainbow Dash'.
In "Friendship is Magic", she does but in older "My Little Pony"s, the answer is no.
Ashleigh Ball .
Currently Rainbow Dash does not appear to have a boyfriend.
Pinkamena sits on Rainbow Dash in season 1 episode 25 "Party of One"
Rainbow Dash's pet tortoise is named Tank.
Rainbow Dash is a pegasus, which, in the MLP: FIM universe is one of the three main races of pony.
Technically, she is not. Surprisingly it is Fluttershy. The Hub recently had a marathon of My Little Pony episodes revolving around the "fan favorite" pony. They asked viewers of the show to go online and vote for their favorite pony. Fluttershy won the fan favorite vote. But, I think a lot of people like Rainbow Dash because she "Is about 20% cooler" (Quote by Rainbow Dash) than the other ponies.