Is it about the failing state
of my RELATIONSHIP with Penny?
The Big Bang Theory Season 10, Episode 13
"You think you're doing
a favor by being in a RELATIONSHIP with me."
The Big Bang Theory Season 3, Episode 7
Anyway, you're aware that Leonard has
entered into a new romantic RELATIONSHIP...
The Big Bang Theory Season 2, Episode 9
Now, how could you not tell me
you were in a RELATIONSHIP...
The Big Bang Theory Season 3, Episode 11
...to your desire
to have a RELATIONSHIP with Leslie.
The Big Bang Theory Season 2, Episode 2