You don't know his GIRLFRIEND very well.
The Big Bang Theory Season 10, Episode 1
I have to tiptoe
around his new GIRLFRIEND.
The Big Bang Theory Season 4, Episode 19
No, the deal was that
if either of us ever got a GIRLFRIEND...
The Big Bang Theory Season 3, Episode 5
I have to break up
with my GIRLFRIEND.
The Big Bang Theory Season 7, Episode 16
Great. You have a GIRLFRIEND,
Howard has a GIRLFRIEND...
The Big Bang Theory Season 4, Episode 5