i dont even have to think hypothetically about this question....my ex boyfriend cheated on me when he went on an all boys holiday in corfu. i knew something was wrong when he came back and was really attentive and over the top affectionate, which was something he hadnt been for the 9 months we had been together. also looking back now i could see signs that his friends were trying to let me know what he had been up to. 2 weeks after he had come back he phoned me just hours before my A level exams and told me.... the ******! because im a strong person i just hung up and went in and did my exam.....as soon as it was over i cried. he beged me to take him back saying he felt lonely one night and it was offered to him on a plate. hes a good looking lad and i was always having to fend girls off him, just seems that night he couldnt resist. i couldnt forgive him, not only for the cheating but also for the timing of telling me as if he was intentionally trying to **** up my exams. oh well its all in the past and i can honestly say im no longer bitter about it.