That's true, but it's also the case for everything else. Not knowing of everything doesn't mean we can't do anything about what we do know of.
[But the rest of what she says takes a little longer to reply to, because he understands that fear more than well enough and has to sort out exactly the right thing to say in response.]
It's impossible to tell you for sure that you aren't. But not only is it unlikely in general, your concern for the possibility indicates it isn't the case; you know what it's like to be on the other side of that situation, and as long as you care about not putting someone else through that then you won't end up like him.
private text
[But the rest of what she says takes a little longer to reply to, because he understands that fear more than well enough and has to sort out exactly the right thing to say in response.]
It's impossible to tell you for sure that you aren't. But not only is it unlikely in general, your concern for the possibility indicates it isn't the case; you know what it's like to be on the other side of that situation, and as long as you care about not putting someone else through that then you won't end up like him.