There is no specific time limit for foreplay. It depends upon the circumstances. Remember foreplay is the need of a woman not man. Foreplay is the time of love and preparation of woman for sexual intercourse. The desires and passions in a woman increases as slope. Therefore; during foreplay her sexual areas are being stimulated by husband in order to arouse her. Different women have different threshold time for attaining the arousal. The variation depends upon the physique and mental conditions of a woman. Like for instance, a bulking, thick and massive woman who in other words not slim would be aroused with in very short time. On the contrary, a slim and lean woman would need more time which could be tiring for her husband. The pleasant voices that are emitted by wife during foreplay are the signals that she has now been prepared for sexual intercourse. At her arousal, her vagina would get lubricated, her nipples of the breasts would be erected as well. 

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Kya koi bta sakta ha k jb koi larki pehli bar sex karti ha tu us k bleeding hoti ha, kya bleeding hona hi virginity ki nashani ha agr bleeding na ho tu us ka kyamatlb ha? plz inform me?