[ ... Interesting, that it really is two Sirens he's telling this backstory to, but Fie's already learned by now that trust isn't something you can easily predict in any kind of relationship. That he's telling her now could just mean that he thinks she won't live much longer, but she'd prefer to give him the benefit of the doubt here.

For some reason, he's willing to believe in her. Fie can't guarantee half the island won't know who she is by the end of the week, but...

She trusts Hiro. ]

... People can get really emotional when their family's involved. If you realize now you were wrong, that's already improvement... but I also think no one would blame you for getting that angry.

That's why we have friends, to keep us from doing stupid things when it gets to be too much.