Trust?

Trust is a very sensitive issue that I have a problem with. It is very hard for me to trust someone even if I have known them forever. I have been lied to a lot in the food business like when you have crew calling off and they give you this total lie, but you have to believe it is the truth so you don't accuse them of lying. After a while the truth comes out and you feel like you were taken advantage of. For example, there was this one crew member that called off three days in a row and when he came back he said he was in a car accident and he couldn't get out of bed during those days. For over two weeks he walked to work and said his car was in the shop, because the car had major body damage. Around a month later I find out that the whole story was a lie and the reason he didn't come in to work was that he was tired. You work so closely with these people that you want to trust them and be friends with them, but right when you start trusting them wham! They take advantage of you. Once again in this business you come across some people that are two faced and they can't help themselves to start drama and cause disruptions for the rest of the team. When those people say something to you that you, yourself does not want to believe. Should you trust them? Or should you see if you can get the info from another source that is more trust worthy? Or go right to the source of the problem to see if the problem is really a problem? The only one I can trust in this situation is God because he is the one who puts the hurdles in your way to make you stronger for what else may come. God does this so he can build your character and your soul.
Without trust there can be no emotion. I don't trust a lot of people so when I meet them or talk to them I put my guard up(for me the guard is this huge wall that takes a very long time for me to push it down or let someone climb over it). I fear that I am going to be stuck with this wall forever it is almost automatic for the wall to be up, like when meeting new people I am very shy and unusually quite around the ones I like. However, I never end up talking to them because I am too shy. Will the wall ever let emotion thru? Is there a reason why I don't show emotion? Is it to protect my self and my own heart?, or the ones around me? I pray that God will give me the strength to overcome this hurdle and let me interact with these few people with out any conflict that would hurt me or the ones around me. I know God loves us, but with out pain there is no love. So he gives us pain so we can know the love he has for us. Then he gives us trust so we can find the tangible love we all seek or have found, but can you find that love without emotion? I think every day that passes I need God more and more nomatter the quantity I had the day before the hunger for him gets stronger and stronger by each second that passes. By this time I am starving and in desperate need of his love and devotion. I hunger for you Lord, I thirst for you Lord, if you fill me up I will love you and follow you till the end of time.