Girlfriend Shared

It was summer when we were home from college. A close friend, Bob, had a secluded cabin in the local mountains. My girlfriend Margie and I spent every weekend with Bob at the cabin. We made some great meals, got high, and generally had a good time together. One Saturday night, we were in the living room and I was making out with my girlfriend. Nothing that Bob hadn't seen before. Occasionally Margie would make out aa little bit with Bob, but it never went beyond kissing. But this night, I had Margie lie on the carpet. After we had been kissing for awhile I began to unbutton her top. She pushed my hands away, but when I said to her it was all good, she became very calm and she let me undress her completely. I continued to kiss her and feel her until she was wet. Bob was watching all of this and was stroking himself. I looked into Margie's eyes and told her that Bob was going to fuck her now. When she looked at me I said Bob was our very good friend and she should let him make love with her. I motioned to Bob and he got between Margie's legs and started fucking her. As he continued, Margie began to moan and thrust back. I could tell she was about to have an orgasm. As she did, Bob emptied into her. When he finished, I pushed into Margie and fucked her hard. It had been very erotic to watch her fucking Bob. She was so lubricated, that I came quickly. We each had Margie again that night. When we were alone, I asked Margie how she felt about being shared. She told me that once I had told her it was okay, she was fine with being fucked by Bob. For the next month and a half, before we returned to college, we shared Margie every weekend. Margie and I went to the same college and shared an apartment. When we got back, she asked me to set it up so she could have threesomes. My best friend and I took turns with Margie at least once a week during our senior year. Margie loved having two men to fuck her.