Sammo

Answer: She wanted room for her own things. The apartment was cluttered with so many collectables that Leonard never looked at, that he never noticed when she put some in storage.

Brian Katcher

Well if they're a couple why not talk to him about it? After all couples are supposed to compromise on things, imagine if he'd done this to her.

Rob245

Not sitcom couples. Every reaction has to be exaggerated and borderline psychotic.

Sammo

It's a play on the "women always do what they want and the man goes along with it" type scenario. Plus, Penny is seriously hot and way out of Leonard's league so its entirely plausible she knows this and knows he wouldn't question her anyway, as he will always give in and give her what she wants.

The_Iceman