Cho appears next to Fischer.
"What you looking at?"
"Those two."
Cho follows her gaze towards Jane and Lisbon deep in conversation.
"What do you think he's saying to her?"
"Why?"
"Look she's as red as a beetroot."
"I have no idea and I don't care."
He walks off so Fischer can't see the slight smirk playing on his face. He remembers the only other time he's seen Lisbon blush.
"Yeah but not for the reasons you're thinking.."
"What am I thinking?"
"Never you mind"
Cho knew then and knows now, he takes out his phone to call the Rigsby's