I am the other woman. I have been with the same man for 7 1/2 years. He is not legally married but he is living with a woman. I am tired of his lies. The guilt of being the other woman which I only found out about 5 1/2 years into our relationship is effecting me physically. My question is do I tell her about our affair or do I walk away and hope that she finds out on her own? I feel more responsible for his cheating than he does.