If you think about it, it's probably better to be a complete stranger. Eventually I'll wander off back to my friends and you'll never see me again, and therefore be spared remembering that time you got blood all over my shirt.

[Ghastly considers the same shoulder his new acquaintance is, and shrugs lightly.]

I've had worse. You don't want to know the things I've fallen into. I don't want to know the things I've fallen into. It will come out.

[He can handle bloodstains. Or, failing that, he can make himself an entire new shirt.]

...that said, if you do want to talk about it, now is probably the time.