If they fail to respond with love, this means they can't really see who you are. So what they're looking at isn't so much 'you' as it is how you might appear in a certain way, based on what the person is hallucinating.
So then every time someone doesn't treat you with love, they're not really treating YOU with unlove, they're treating a projected sinful guilty idea of a person with unlove.
The catch is that it usually looks like the person is making their unlove about YOU, and that they target it at you, even using your name, referring to you, pointing in your direction, getting in your face with it, but it's still not about you.
When you think it's about you, you have also joined with them in illusions and have taken it personally. You've failed to overlook the illusion that the person is actually attacking themselves, and that they're interacting with their own projected sinful self. It's easy to be mistaken about this and to think that they're doing it to you when they're really not.
So long as you are clear about who you are, that you are love, you will realize their call for love is clearly their own call and need for love, and love is the only response. But if you fail to see your own identity and confuse yourself with ego, then you will take their attack personally and will think it's about you.
You will make it be about you, even though it isn't. And as such you will hurt yourself with it. And then you will feel upset, not because they attacked you or because it was about you, but because you used it to attack yourself.