Sister swap Stories

Rosemary got home late after her shift at work. Lily and I went about the rest of our day as if nothing had happened. Despite the guilt and sexual tension hanging in the air we got along well, we chatted easily but there was no extended conversation. I felt bad for cheating, and she gave me time for contemplation. I wondered if things would be so easygoing if the sister's roles were reversed. Would Rosemary give me space...