A Month Before the first Equestria Girls movie, Humanoid Time:

Sunset Shimmer, a Pony in Humanoid form, is as far as she knows the only Pony in a world inhabited by sapient apes. It makes matters worse that many seem to be mockeries of Ponies she had known in Equestria. She has no real friends, and no prospect of ever finding a real lover.

Back when she'd been a Canterlot gentlemare, and the special student of Princess Celestia, she'd had little time for friends, and none at all for love. Now, it looks as if she may never find friendship, and love seems impossible.

All she can do is console herself as best she can.