Alright. Ignoring the mispelled girlfriend.
2 things “Pinkie Pie”
first of all you aren’t a girl.
Secondly, you are a cartoon character, and I am not quite that sad yet, to have a girlfriend that doesn’t really.. excists.
Only if the following (in order) are not available:
Rarity, Applejack, Vinyl, Octavia, Chrysalis, Celestia, Fluttershy, Twilight, Lyra, Derpy, Cloudchaser, Spitfire, Luna, Cheerilee, or Rainbow Dash.