She Is Bisexual

I had known my girlfriend since she was 13 . By 14 we were having sex . When i was 20 my parents went away for 6 weeks . My girlfriend moved in with me when they were away . We had great sex . On the second Saturday i had arranged to spend the day with my pals . We were going to drive to the coast . We met up at 9-00 . One of us was delayed by a problem at home . In the end he was ready at 11-00 . As we were waiting my pals were joking and asking each other about what sort of bathers they were taking . I realised that i had forgotten mine . I nipped home to get them . They were in the airing cupboard on the landing . The front door was locked so i guessed my girlfriend had gone out . When i went when i was climbing the stairs i heard something . When looked across to the bedroom the door was wide open . My girlfriend and her best friend were on the bed naked . My girlfriend was between her friends thighs licking her pussy . I walked in to them . When i asked what they were doing . My girlfriend admitted that they had been having sex with each other since they were 11 . But they also had sex with boys . They were not lesbians . They were bisexual . She had always kept it secret from me . Being scared to tell me . In case i dumped her . This got me feeling horny . I phoned my pals to tell them not to wait for me . As something had come up and i wouldn't be joining them . I asked if i could join them . I undressed and got on the bed . We had a threesome . I licked my girlfriend and her friend crouched over her mouth with my girlfriend licking her . Over the day i licked them both they licked each other . I fucked them both cumming in their pussy . From that day we all slept together and had sex . The girls let me watch them having sex . I had sex with both of them . They did what i wanted them to do . I had one riding me . With the other crouching over my face with her pussy on my mouth .