[Chinese]IENE-460 Is it okay to have unprotected sex if she's pregnant? I secretly had raw sex with my brother's wife without his knowledge!

A good brother and a wonderful sister-in-law. My relationship should have been much better. However, the couple's relationship changed subtly when their sister-in-law became pregnant. My brother-in-law, whose sexual desire is increasing even after becoming pregnant, has become completely sexless, whether he is aware of his wife. He didn't want to hear this story. Still, I was pressed by the person I admired... Even though my brother is there!