Trying to say, "well, you shouldn't have to make deals," is like me telling you that you need to feel things you don't, in that it's a fundamental lack of acceptance of his reality. Which he doesn't need. He's had so much of it that he's shocked these days when anyone meets him there without hesitating.

It's too late for initial impressions, but he's not unobservant. He'll notice if you're disturbed by his very nature every time you look at him. I'd appreciate it if you could sort your baggage out instead of laying it on him.

As for the curse, there are several versions of the story, and considering he's built out of human belief, perhaps they're all true. But what they have in common is that he was a legendary king, cursed, who ended up crazy and wandering. It makes sorting things out hard, especially with all the extra lives stuffed into our heads here.

His deals aren't a curse. Being a leprechaun isn't a curse. Being rewritten over and over into something new, while not fair, is also not a curse. Only the madness.