Sex came in time and just as I hoped it is fantastic. We have been together for four years and it has not changed.I have always enjoyed talking during...sex. And to my surprise so did she. I was absolutely delighted to hear her describe one of her fantasies. They varied substantially. Everything from big cocks, black of course, to being a sub in training. As usual after one particularly aggressive session we lay there and talked. Out of nowhere she admits she is bi-sexual and has been since her. The doctor said “Yes of course, but he has to stay up by your head, no peeking,” with cute little laugh and smile.As I was holding my girlfriend’s hand the doctor moved up so she could do a breast exam on her. Yes, this was exciting, the doctor kinda leaned forward which gave me a little glimpse of her cleavage.As I held her hand my girlfriend just looked into my eyes she was getting flushed. The next thing that happened was incredible. The doctor then told my girlfriend that she was going to. As I was pulling past the pay window, I saw Debby’s sister, Denise walk out of the building holding hands with a guy who was definitely not her husband. They looked completely immersed in each other, and kissed when they got to their cars.I filed that image in the back of my mind and drove back to the bank. I pried the door up and Dave pushed a couple of door shims into the hinge pin. That fixed the problem.I didn’t mention the incident at MickeyD’s to Debby. She had become a screaming bitch. She then thrust them under her skirt, wiped her soaked pussy in them and tossed them to me.I caught them, feeling the wetness of her still soaking pussy now dampening my hand that held them."Enjoy them, and I'll see you tomorrow!" Sam said as she sat back down and returned to her duties of work. She'd got what she wanted for the day, and while I was hard and desperate to get off, I didn't want to ask, or push for anything from her.I clutched her black thong panties in my hand, and exited the.