Just a random thought

I identified a weird feeling that I have been having. I have had it once before that I can clearly recall. It was this feeling that I couldn't explain and it was simply a reaction to the way that I was treated. And once I experienced the feeling and identified its source, it changed how I saw the person and our relationship. I fear that has happened again. I have shut down. I am done. I have given up and I don't know if I am sorry. But for now I must pretend because the time is not right. But soon I won't have a choice.

Translation:
I once had a friend, whom I did not like a first, but then decided she wasn't so bad. And we became close. But there was something uneven about our relationship. She had all this drama and it seemed that half the time she created it. She had multiple personalities for the different people that she knew. When she got to college she started to project this persona that not many people before had known existed. And she worked hard to keep that image, all the while being completely different behind closed doors. And then, it all became about her and our friendship was about making her feel better and always telling her what she wanted to hear. And I refused to give up on our friendship until one day it was too much. Everything we did together was a competition with her. Who had the most friends, who had the better grades, who could have the most fun, who was the most popular, who could get the most boys. The problem was that I did not want to compete. I did care for who was the best at any of those things, but to her they were the most important. And I eventually got this weird feeling about her. I began to feel she didn't care about me and that our friendship was simply her way of being entertained until something better came along. And I am better than that. I deserve better friends. And so it ended. And it left me with this bitterness about how I was too quick to trust people.

And now I have this friend who reminds me of my old friend. And I recognize the feeling once more. And I identified it tonight. Last night I had made the decision to not talk about this ever again. I had swore that I would do my best to pretend to care and to suck it up and pretend all was well. I did good earlier today, but then it clicked and I made this connection and it makes me uncomfortable. If I have not had luck being friends with people that give me this feeling is it worth trying? If fundamentally I don't trust this person and don't have any faith in us being real friends, is it worth any effort? Is it fair to judge this person through my previous experience or is it just a weird coincidence?