Here is my situation. My girl friend and me have been together for four years I live in one part of the contry she lives in another. We said we would give long distance a try which I am cool with because it was my choice to move a couple of months ago ( 6 months ) we broke up because she felt I was not right for her cause I treated her badly we broke up for 3 months in that time she saw a guy who she met at college for two weeks , but he left her and went back to his girlfriend of 8 years I then fought to get her back since we have been back together she has been talking to him on the phone thinking that I don't know when I found out about this I smsed the other guy and asked him in a polite and decent way to please stop contact with my girl friend he replied it will be difficult as he loves her and his girl friend so I just bit the bullet and said you do what you have to do when io confronted my girl friend about it she did not want to stop communication with him and when I asked why not she said cause he is my friend but at this point in time he and she has told me they are not speaking the truth is they are and I know I can't stop it look it may look like I am possesive but its not the case I feel uncomfortable in this whole realationship cause it seems asthought she is disscussing us what should I do I have developed an anger towards her which I feel is all part of the situation any advice.

OK there is not one single period in that paragraph... or sentence I suppose. It was extremely difficult to decipher.

It seems to me like she is distancing herself with you and wants the freedom of being single. She has most likely been faithful to this point, but the outlook on the relationship is bleak. She obviously doesn't care about your concerns enough to stop, she's even lied to you about not contacting him anymore. And on top of this you don't live anywhere near each other... it's a cocktail for distaster.
You need to really think about whether you want to fight for this girl, and if you don't then make a clean break and go NC.

Trust your gut feeling. You can trust your instincts and your intuition because they are a part of you, developed from every experience you have lived in your life. Trust your gut feeling.

Your relationship is not committed enough, to handle the trials and tribulations of long distance. Assumptions, and conflict, and jealosy, has built resentments on both sides, and a decision needs to be made, continue, or quit. The problems will grow, and I don't see either of you budging from your positions. Not enough commitment, communications, or willingness to work together.