my husband has been having sex with my younger sister, and the worst part is that i was the one who begged him to let her move into our house when she had nowhere else to go. for six months, i defended my husband every time my sister complained that he made her uncomfortable. i thought she was trying to create problems in my marriage. last night, i woke up around 2 a.m. and noticed my husband wasn’t beside me. i went downstairs to get water, and i heard my sister crying in the guest room. when i opened the door, my husband was standing there. i asked what he was doing in her room at that time. he said she was having a panic attack and he was trying to calm her down. i wanted to believe him. until my sister grabbed my hand and whispered: “please don’t leave me alone with him again.” i turned to my husband, but he suddenly became angry and told me to stop listening to her lies. then my sister unlocked her phone and showed me messages he had been sending her for months. i was crying when i asked her why she never told me. her answer destroyed me. “i tried to tell you the first week i moved in, but you said i was jealous of your marriage.” i turned to my husband and told him to leave. but before he walked out, he looked at my sister and said: “so you’re finally going to tell her why you came to this house in the first place?” my sister went completely silent. then she looked at me and said: “there’s something about your marriage you need to know, and i’ve been too scared to tell you.” if you were me, would you hear your sister out first, or would you never forgive her for keeping this secret for so long?