We all know that House's looks towards Cameron are the most sensitive, soft looks House ever gives.
Here is the evidence from season 3.
"Look at her go"
"I want to know"
"If you know what I mean"
"What are you doing?"
"Come on, you are beautiful"
Worried.
Proud.
Help me.
"I trust you."
"Don't leave"
Ashamed.
"Do you love him?"
"You make me smile"
"Uhmm..Cameron in my bedroom"
"Where are you going?"
"
"She thinks I can do this?"
Guilty
"Are you really leaving again?"
"I am not dead yet"
"WOW"
Absolutely Heartbroken
"I've missed you"