The LONELY guy
and the two happy couples?
The Big Bang Theory Season 4, Episode 22
I was LONELY, and I thought
The Big Bang Theory Season 12, Episode 4
...where she could socialize
with other LONELY people.
The Big Bang Theory Season 4, Episode 5
So you're keeping busy, you're not LONELY?
The Big Bang Theory Season 10, Episode 24
...one asinine comment,
one LONELY man and his chicken...
The Big Bang Theory Season 3, Episode 15