Melissa was just trying to stay warm but to some people, it looked positively hot.
As Penny jokes about her Vegas Thanksgiving, she realizes that she's a married women.
Season 7, Episode 6
Penny: Sheldon, you big weirdo. I want you to know that I Love that you're in my life.... Sheldon: I Love you too.
Since Bernadette couldn't make it to her date, Howard decides to bring the date to her
Johnny Galecki and Kaley Cuoco discuss Leonard & Penny's relationship in Season 6.