A romantic evening alone with my sister ends with her filled.

************

Nothing much happened for the rest of Sunday. We had a little brunch together and then I drove home surprised by how exhausted I was. A few days later I got a message from Kate that she had gotten her period, so my accidental cumming in her hadn't been an issue. We continued to chat and settled into our between-breeding-sessions routine.

About a week later I got a text from Kate asking if I had a free evening. I told her I was free the next night, and asked what was up. She told me that she and...