I have been dating my boyfriend for 15.months. I have recently started researching my family tree and in doing so, I have found out that we are 4th cousins. We share a great great great grandfather. I was shocked when I heard it and very upset. Any advice on what I should do. Should we stay together or go our separate ways. We are happy together but this has completely changed the way I feel for him.now. its a very difficult situation..