[He lets her get all of that out before offering his reply.]

I did not come here to harm you. I came to train, as I asked.

[He could point out that he did not attack her. He could point out the fact that she'd just given him this huge speech about trusting him, instead of her fear. But in truth, he doesn't feel the need to defend himself on this -- he was wrong.]

Because I believed you might be more interested in a recruitment pitch, than what sort of good I might do. He neglected to explain.

[Because they were both fucking drunk. He doesn't bother to mention that either. It will just sound like an excuse.

So he gets to the crux of it.]

No. I didn't. But I am trying to.

[In the same way that she is trying to trust him. She's just better at it.

He chooses past tense, because he believes that she could have made an attempt to defend herself at any point in time, even when he was armed with two lightsabers, and she did not. If that did not speak of trust, facing down a man a head taller than her with two lightsabers, then what did?

Either way, he feels his duty done. Explanation given, ends tied off, and Rey clearly itching to leave, he turns himself to...walk in the same direction, because that's where the castle is.

And he can't help but feel like the itch he'd come here to scratch had somehow only gotten itchier.]