[Felix doesn't flinch or move at all when Lorenz abruptly stands, though he does lift a brow.]

Tch. Isn't spilling your tea in a fit of passion some kind of etiquette violation?

[He has more words at the ready, but he pauses when Lorenz mentions monsters. Could he mean the people Lysithea told them about? His head tilts slightly.]

According to Claude, you abandoned him. You're saying you were, what, spying for the Alliance? Sabotaging the Empire?

[He doesn't sound impressed, but then he asks,]

By monsters, do you mean those strange mages?