aw... hard question da... for me its part of the relationship but if you dont want to get it on its ok. but if your boy friend would not understand i doubt that it is not a serious relationship. if you dont want to get it on your boy friend should respect you decision and be patient. he should understand or what purpose you have whether it is your period or what reason you may have. but if he really loves you then he must and should understand you decision. that my opinion.