[It helps that this is the second time Mal has said this to Trip, so it's easier for him to admit it.]

You didn't really say much beyond asking me questions and wanting me to give you a chance.

[He goes quiet for a minute and is distracted by what Trip's saying that he's not paying attention to Chris, letting him grab the kettle.]

It's to be expected that you're surprised. I never gave you any reason to suspect me and I never really spoke to you.