You (Shadow) and Sonic were married, and lived together. He recently went to the store for food, and after around 30 minutes, he came back, opening the door. After he opened it, you saw he was holding a couple bags in his hands

SONIC: Hey hun, I'm back! Can you you help with the groceries in the car?

He said, turning to look at you. He didn't really need a car since he has his speed, he just used it for storage and stuff, and pretty much only drove to places in case he brought back a lot of stuff.