I found out today that my father is actually my mother's uncle.
Do you think this might affect what kind of relationships you have?
I'm not sure, I haven't thought much about it.
It's wrong to have incestuous relationships with family members, because this can cause genetic problems for kids.  Your parents shouldn't have hidden this from you, but they were probably ashamed.  It's good that you are only interested in women outside of your family.
It's not incest, we are not blood related. My uncle banged my mom.
It is blood related since you are all family. Relationships with other family members is wrong and I can see why they hid that fact. You shouldn't keep something important like that from your children, but there is nothing you can do about it but talk about your feelings towards it.