[What Passenger says, all of it...at least in regards to how he feels about him and his motives, his desire for revenge, justice, all of it...Sesa believes it all. Passenger, manipulative and willing to play the long con though he may be, has no reason really to lie about him about any of that. It follows along with what he's been doing ever since the two met, after all.

But this, deep down, is less about that than Sesa wants to admit. In fact, Passenger seems able to pinpoint the truth pretty much immediately as he points out the kiss they shared in the castle, which once again leaves Sesa looking anywhere but at the Liberi directly. Hard to do, when there's nothing else of interest in the room to look at.

For a long moment, he says nothing. He simply stays put, turning over his options in his head. He could just turn around and leave, but...

Eventually, he moves away from the wall, stepping quietly across the floor over to where Passenger is sitting. He doesn't come any closer just yet, like he's addressing a particularly dangerous viper.]

...it is true that you saved my life. And from what I understand- [What he gleaned from Gnosis and Silverash, anyway] -the act with which one was saved from an icy prison is...not delivered lightly.