I got married three weeks ago and am now freaking out because I may have married a cheater. My husband and I went to a family birthday party last Sunday where I learned that his father and his grandfather were both cheaters. I am freaking out because I am worried that infidelity is hereditary. My friends are telling me to calm down. Is cheating hereditary? What is your opinion on this? Am I worrying for nothing or do I have a valid concern?