[He really doesn't know what to do with someone calling him frustrating and difficult while smiling like that. It doesn't feel like friendly teasing but he really doesn't know. He might have gone with it if not for being asked to give details.]

...Sorry. I appreciate the offer, but it's kind of a difficult thing to talk about. Maybe... maybe some other time. It's really not very defined anyway, nothing common, so I don't know that there's anything to be done at the moment.

I'll get your money to Señor Ekkehardt. You don't have to worry about me.