Trust issues?_2!

One of the things I notice I'm still not better is with trust issues. I can't trust people now. My walls are all up. I don't want to get hurt so I isolate myself. It is true that I'm starting to talk more to new people, but inside I feel that I'm not trusting them. I'm not giving my 100% because I'm scared to get hurt. I'm scared that the other person won't care about me or won't be interested in being my friend and I don't want to get hurt. I know this is not the way I should be thinking but I can't help it. 

In one hand I want to meet new people and I want to have new friends here in Porto and I want to start a new life here, but on the other hand I don't want to get hurt and deep down I know I'm going to get hurt. And it's normal. It means you're doing something. It means you're not stopped watching life go by. But I'm so scared of getting hurt. and disappointed again. I am. All of this just made my introvert side to grow. And it was already a big side. Now I notice that it's bigger and it just doesn't get bigger because I fight against it and sometimes I don't think I'm going to be strong enough to win this fight. Because the introvert side is the side I feel more comfortable with. It's the side I feel more safe with. 

I'm really making an effort to change all of this. To be more sociable. But I also feel that when I feel that the others don't like me or are not interested in me, I try to make an effort to see if it's because of me, of my attitudes. But when I see that that effort is being wasted I just stop and I try to accept that that person maybe just doesn't care about me (it's their right). Is just harder when you like the other person. When you feel you could be close friends with them or when you already were and for some reason they stopped caring about you. That's hard and that's what I'm scarred it's going to happen again. That's why I don't give 100% of myself anymore. I don't want to get hurt.