Details
- Season
- Season 4
- Episode
- S04xE16
- Air Date
- 17 February 2011
- Where to watch
Overview
The Big Bang Theory season 4, episode 16 — “The Cohabitation Formulation” (S04xE16) first aired on 17 February 2011.
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.