Almost 15 years and I do NOT know who my biological father is!!

At the age of 17 I was told from my mothers ex boyfriend that my Father Jeff was NOT my biological father. I was devastated and hurt and felt so betrayed from my own mother. I then talked to my father Jeff and he also had something that he was hiding as well. He has known since I was 14 years of age that I was NOT his biological daughter. So once again I was even more hurt from my father Jeff lying to me telling me the blood test was for INSURANCE (I was younger and didn't have a clue about that stuff) The blood test confirmed I was not his daughter. I felt so betrayed and let down by the two parents that raised me and I love so much. My parents raised me not to lie and if you do lie or make a mistake to own up to it. I now realize as an adult that this is very hard to confess to. I feel my Mother wanted to keep her family together, I feel she didn't want to take a chance of confessing to the affair to my father Jeff. Because my father would want a DNA and divorce. And I also see why my father Jeff wanted to know if I was his daughter or not and I understand now why he didn't tell me. But they both need to understand why I want to know who my biological father is. I have heard numerous names of possibilities of potential fathers. My mother has always told me ONE name and his name is CHRISTOPHER GLASS from MARION OHIO 43302... I just want to know for sure if he is my father. I met him shortly after finding out this devastating news on my 17th birthday. His wife threaten to leave him if he was to speak to me again. I tried to reach out to Chris and his wife Tammy on MYSPACE (2006) and she was very harsh to me. Tammy (Chris's wife) said I was a mistake and NEVER should of been born. I again realize as a 31 yr old woman, feel her pain. But I never asked for this. And no matter what she was feeling she had no right to say that to me. She should take her feelings to the TWO who did this, Christopher and my Mother. I was brought into this world and raised by a man that loved me dearly. My father Jeff and my Mother was divorced when I was at the age of 6 and I lived with my father Jeff. PLEASE HELP ME WITH THE SEARCH OF MY FATHER AND HOW TO GET A DNA. I DESERVE TO KNOW THE TRUTH. I WAS DIAGNOSED WITH CANCER 7 MOTHS AGO..MY 4 CHILDREN AND I WOULD LIKE TO KNOW OUR OTHER FAMILY...GOD BLESS