The Big Bang Theory: Season 4, Episode 16

4 - 16: The Cohabitation Formulation

Bernadette and Howard enjoy each other's company, however Bernadette is upset because Howard always leaves her alone right after having sex so he can help his mother in the morning. Therefore, she asks Howard to move in with her, an idea that he initally turns down. After a fight with his mother about being with Bernadette (and the possibility of acquiring a