"Sir, I've got the permission from Brenda to borrow those things from school." Really?!" he said somewhat surprised."Yep," Sandra said smiling and gav... him the note Brenda had written for him.He looked at the note in unbelief, but he was sure it was genuine. Well, if Brenda had given Sandra permission to borrow those things for the weekend, who was he to deny her those things."Well, follow me then," Robert finally said.Robert walked out of his office, and Sandra followed him. Sabina joined them. I finished my shower, and got dressed, I noticed Tammy & Jasons door was closed. I stopped to listen, and heard their bed squeeking lightly and the headboard hitting the wall. I got a pang of jealousy shoot through me. I knew I should not feel this way, but I could not help it. I went out into the kitchen and sat down. After a few minutes, Tammy came in and started to massage my shoulders. She said Jason is taking a shower, and then she tried to straddle me. I asked her if she and Jason fucked,. While she was doing the ‘downward facing dog’, I was asked to pull her hips as much as possible. The harder I pulled, the harder she moaned and I was able to see the perfect shaped bottom which indeed brought a boner in my shorts. I held her bare stomach to balance; it was white, a little bit of fat and sweaty.I helped her with 2 more yogasanas and meanwhile, I removed my shirt as it was getting too hot. Imagine a man and woman sweating like pigs and were stretching. It was getting hotter and. If her only concern was that we would get interrupted, she would not put up much of a resistance to my advances. “I'll lock it,” I proposed in a friendly voice. “And when I return, I want your clothes gone.”Gingerly I got up and walked to the door, with more of a seductive sway in my hips than I thought I could muster. I locked it up, and then turned around expectantly. She did not disappoint.She had pulled off her green tank top, and the nice, full breasts that I had only glimpsed at through.