First off... thanks to "jdcopp" for answering my last question. Ok, this is all the info I've got on this film I'm looking for.
1. Definitely Black and White
2. Definitely French
3. Scene: in an apartment between a man and a woman with a shot that pans back and forth from a kitchen to a door.
4. The man keeps entering and exiting the room on the other side of the door while having a conversation with the woman in the kitchen. The last time he exits the bedroom he doesn't open the door to leave, he simply steps through what had appeared to be glass.

Anyone know what this movie is? C'mon jdcopp!!