Well, I am sure that you already manifested a lot of things you felt bad about. I would guess that a break up was one of those things. And now, you are probably manifesting that this person is staying away from you. You always get what you feel to be true, regardless of how it feels. For example, you felt to be true that you aren't worthy enough to be with your person. That didn't feel good for sure, but it still manifested. So it has nothing to do with feeling good. You are always in a state towards a thing, for example something like "he/she loves me", "he/she will leave me", "he/she will never come back". That are three states towards the same person that feel very differently, but obviously can all happen. So the direction of the emotion doesn't matter. It's in indicator for you, if you will like the upcoming evens or not, but it has nothing to do with the Law. 
It's not us that write the rules. There are very precise rules we have to accept. We can't cheat. The question is always what you feel to be true. When you feel that you are in a relationship with the person you want, you can feel good, bad or indifferent about it. When everything is fine, you will feel good, when you start worrying you will feel bad and sometimes, you maybe don't reall know how to feel. But what matters is that you KNOW that you are in that relationship. My favorit example: I know myself to be an psychology student. Before my exams, I don't feel good about that. I am pretty annoyed by it, but I don't doubt myself to be a psychology student. You can't lose your state by hating it or keeping it by loving it. You can only lose your state by changing your state. You can love to be skinny, but being afraid of gaining weight and your love for being skinny won't matter, because you are in a state of "omg, I will gain weight". You can feel as good as you want about being skinny, when you are looking at skinny people and say "I hope I will look like this one day".