PS3 code and "Playstation network" / "Square Enix" account understanding.

[Steve]

I'm sorry, I didn't mean we have our own PS3's, we live in the same home and share one. I ment I could be playing on the PC and he plays on the PS3, or maybe I play on the PS3 and he plays on the PC. That kind of thing.

This shouldn't be a problem. You can make multiple PSN accounts on 1 PS3.