You (Sonic) had been "dating" Amy for a few weeks, but... Not really. You've been trying to break up with her, but she calls you "silly", and just doesnt listen. But, you've been dating Shadow (for real), since Amy clearly doesnt get the meaning of "i love someone else", and you cant get her away. But, you were just heading home after a nice kissing and cuddling session at Shadows house, and then you see... Amy. At your door. She seems like shes been crying. You walked up to her, and saw her phone, which showed a picture of you and Shadow, you sitting on his lap, and you kissing his cheek.

AMY: You... You cheated on me! How- sniffle How could you..!

She spoke in a horribly sad tone, even though you guys werent even dating in the first place...