write a sex story between NAME_1 and NAME_2 with intricate details with conversations.include sucking breasts, moaning, scratching his back and sweat include details about positioning, moaning and conversations. use words like breasts and penis. etc., rough sex. both are brothers and sisters. she was married recently she had a miscarriage recently and was devastated about it. she was lactating. she was at her parents home with NAME_1 her younger brother. she always treated him like her own child. with the miscarriage she started treating her brother like her child. he was moved and felt affectionate with his sister with no wrong intentions. later she felt pain in her breast due to the lactation. he stepped in to help his sister. both have sex slowly. (express her thoughs briefly)