
and string theory sound
like a RELATIONSHIP,
The Big Bang Theory Season 7, Episode 20

How can we ever hope to have
a healthy RELATIONSHIP
The Big Bang Theory Season 7, Episode 18

Listen to me, if she's writing about
your RELATIONSHIP, use it to your advantage.
The Big Bang Theory Season 6, Episode 21

the most important thing
in a RELATIONSHIP.
The Big Bang Theory Season 12, Episode 8

That's right,
I am in a boy-girl RELATIONSHIP
The Big Bang Theory Season 7, Episode 5