Tell the truth.

You decide that you can trust Todd, he was a good friend of yours in high school, and it would be safer with two people instead of just one. And it would be less lonely. You decide the pros heavily outweigh the cons, and tell Todd the truth.

"Yeah, I'm in my family's house. Let's grab as much food as we can and go back there."

You and Todd load up your bags with as many cans as they can carry and head out. You walk back to your house and walk in with Todd following behind.