Happy accident

I was 32 and married to a 53-year-old man, he wanted children asap, but I hadn't yet got pregnant. I attended a party with my husband had quite a bit to drink, my husband got called away on business. He was all business, business before pleasure was his motto, I think. Anyway, he'd his younger brother 45 take me to the family home, I awoke early in the morning, getting fucked. It was still dark and I at first thought my husband, but it was his brother. He had gotten horny and as I was in the nearby room came in and mount me. Once the shock had passed, I thought what the hell I can't seem to get pregnant, so I let him finish. Pretending to still be asleep when he finished and left, I was sure what I should do. But an hour or so later my husband was home, and I awoke as he entered, seeing me awake wanted sex. I agreed and he started but fell asleep on top of me. Needless to say, he didn't finish what he had started. I got pregnant later on and put it down to the brother as he had finished. But just to be sure I'd DNA test done 6months after the birth of our daughter 2022. It wasn't my husband who fathered our daughter, but a very close relative. Needless to say, my husband is happy being a father his brother didn't and has since died of a car accident early 2024. My husband had testicular cancer diagnosed and lost his testicles as a result. With no other brother or close cousin, his daughter is all he will have. But he is happy to have his daughter, at the moment he is undergoing more tests as the cancer might have spread. So, I'll keep the secret about his daughter.