Castle 5x03 Moment: That's not the owing I mean - Handle what? - Nothing - Caskett Almost Got Outed

Castle 5x03 Moment (Secret's Safe with Me) - Instances in the episode where Castle and Beckett almost got caught or outed their new “lovers” relationship to Ryan and Esposito. One is when Rick tells Kate “You are so going to owe me for this.” Kate replies “I don't know if the department can reimburse you for all of these.” Che whispers “That's not the owing I mean” KB gets it and smiles but gets startled by Ryan who is so closed to them.
Another instance is when they are discussing Alexis. RC says “Let me handle this.” Ryan and Espo butt in and ask “Handle what? Caskett in unison “Nothing!”
Castle Season 5 Episode 3 “Secret's Safe with Me” (HD)