this can be a very complex question since i do not know anything about you and there are no universal easy answers. a woman's inability to climax during sexual activity can be due to many many reasons -- from medical causes to complex psychological reasons and/or a combination of both. i would strongly suggest that you see or consult an ob/gyn to start the evaluation process
i have been sexually active for three years. he can cum but i cannot seem to cum why is that?