
I do, I just wouldn't tell my GIRLFRIEND.
The Big Bang Theory Season 9, Episode 14

He's just trying
to impress his GIRLFRIEND.
The Big Bang Theory Season 11, Episode 8

By being my GIRLFRIEND
she's saying, you're a weirdo, too.
The Big Bang Theory Season 10, Episode 12

...who is a friend and not your GIRLFRIEND?
- Uh-huh.
The Big Bang Theory Season 4, Episode 5

You still have a GIRLFRIEND.
The Big Bang Theory Season 9, Episode 14