We were at a party , in our married friends apartment . This was a couple of years before we married . The party finished at about 2-00 in the morning . They asked us if we wanted to stay for the night . Eveyone went home , we stayed . We slept as we were , in our clothes . On the top of the bedclothes . My girlfriend was wearing a dess . I took my trousers off . It must have been an hour later . I heard the bedroom door open . I could could just make out the sight of our friend , the husband . Crawling acoss the floor . I closed my eyes and pretended to be sleeping . I half opened my eyes evey few minutes . To see where he was . He was at the back of my girlfriend . He lifted her dress and pulled her panties down to her knees . He fingeed her pussy . He was stoking his cock . My girlfriend gripped my arm . She was awake . He rubbed her clit . Making her cum . She was doing her best not to move , or make a sound . When she was cumming , she was digging her nails in to my arm . He stopped masturbting , so i knew he hd cum . Then he crawled out of the room and closed the door . It had made me feel horny . I asked my girlfriend about it . She told me she had found it exciting , she had tried not to make a sound , when she was cumming . I asked her if she had enjoyed it . She told me it had been good , it had excited her . She wanted me to fuck her . Pulled her panties down and fucked her . . She told me her pussy was feeling as though it was buzzing , vibrating . As though she was still cumming . It did not take long for her to cum . This time she was moaning out loud . This made me cum . When we got up in the morning . There was a damp patch on the carpet . Where he must have cum . We just acted normal , he and his wife made breakfast . We talked over breakfast . Then he offered to give us a lift to my parents house . The next time we were on our own in my house . Having sex . I asked her to describe what it had been like , and how it had made her feel . Telling me , got her arroused . It got me horny . We had a great fuck .