LESSON: Stop going back to the same people that keep hurting you or messing with your brain.
I know, it's hard. Say you meet a person and y'all click. And everything is going swimmingly, or maybe even better than. But then comes the (nearly) inevitable doom. Something, whatever it may be, happens. And you are crushed. And the other person is acting like they did nothing wrong. Or maybe they do apologize. What matters is that they did something that hurt you. But people aren't perfect, so you can go ahead, give them a second chance. But you need to look out for yourself. You need to not submerge yourself so deep in them to the point where you don't see the signs warning you "DANGER. DANGER. PAIN IS COMING." You need to remember, as the past has proven, they aren't always looking out for you, that's your own job.
Let's say whatever trouble happened the first time was not entirely meant to hurt you or not in their own control. That's understandable. But are they at least apologetic? The least bit remorseful? Or, instead, are they continuing on? Either ignorant or disregarding of you. Acting like nothing has happened and they can treat you and everything exactly the same, like nothing has changed. And in some cases, that can be a good thing. Normality can be a good thing. But you need to step back. You need to take a look at the situation and think is this really ok? Can we really just keep going on like this? And you need to come to terms with it if the answer is no. Because change is ok. And sometimes change is better, even if it may not feel like it at first.
And if they have already let go of you, why should you waste your time pining over them when they are obviously not going to return your care? Why should you spend your brain power, your tears, your effort on this person when they aren't going to give you anything but pain in return. Stop it. Surround yourself by the people who really love you, who truly care about you. And don't give me that, "Oh, no one cares about me bull." If you truly feel like that, message me. I will show you love and care.
I understand how hard it is to let go of a person, or just change elements of your relationship with someone, but I also have come to see that it is for the better. I knew a guy, and shit was I gone on him. So gone, that I didn't realize when things started to shift. Then all of a sudden my world came crashing down. But I still forgave, because there really was no "fault," things just happen. So I kept on. And for the longest time, I was burdened with being stuck in this place that I was too dependent on, too scared to let go of. And if I had just let go, even for a little bit, long enough to regather myself, I would have recovered faster. I would have been able to move on and I wouldn't feel such a sense of wrongness every time I talk to this person.
SO moral of the story is, stop devoting yourself to people that won't return it, no matter how much you like to convince yourself they care.