If he did that, it meant that he found out about her affair. If he had done that to Donny, what was he going to do to her? When lunch rolled around sh... called HR and told them that she was going to take a half a sick day and she raced home.I got home the next morning after Deb left for work and showered and changed into clean clothes, before going to work. I can’t stand to wear dirty clothes. When I got to the office, Diane smiled brightly when I walked into my office.“Mick, your wife hasn’t. . IF that were happening?" I asked.He just looked at me for a second and said, "Not in our friendship. I mean; I think it finally clicked in my head this morning. I had passed off that master-slave demonstration the girls put on today as just a lot of fun the girls were having as a lead-up to all the sex. Then, it dawned on me that you didn't give me hell yesterday for violating the best-friend-and-sister rule."All guys knew that male best friends did not date or fuck the sisters of their male. She told me that it felt good and she began pumping my cock faster.“Slow down a bit so I don’t cum too soon”.“What does cum mean?”“You’re about to find out sis”.Just as I said that, my cock erupted and cum flew every which way, including on her face. She was startled but in a good way.“Wow, that was amazing. Can we do that again?”I had to sit down, so I pulled up a milking stool and sat relaxing after my orgasm.“Come over here sis”.I lifted her skirt and put her on my lap.“You can’t ever tell. She hugged me tightly and said fuck me I pushed her on bed and remove everything omg she is dam good and started sucking her nipple and pressing another boob slowly I kissed her whole body and came near pussy and started licking it for 10 min. Then she came on me and sacked my cock she was good at bj I pushed deep into her mouth hmm she sucked me for few mins and told cherry fuck me I can’t wait anymore so I started inserting in her pussy and slowly started fucking her and increased speed and.