He fucks his brother-in-law to his sister’s house

I did Not see my sister for many years, from the day I left the house. So I was very grateful when he allowed me to stay at her house. My relationship with my boyfriend was a nightmare, so I had to leave her home, but I didn’t have a place to go and, thankfully, my sister received me. She currently lives with her boyfriend. A man really nice that I had to fuck. It happened in a moment of weakness, comforted me and made me feel good in a moment of sadness, and I let it go. I would not have had to do it, I would not have had to suck his cock in the living room, or fuck like wild animals in the room of my sister. But it happened, and now I have to leave before my sister knows.