Try being more romantic and creative during foreplay, a woman can get very excited by touching, kissing an massaging several parts of her body before intercourse, you must learn how to be a good lover first. Good luck
sensitive zone of vagina is only 2 inches. an erect peinis of 2 inches can satisfy any woman.Also remember that rubbing of clitoris is as important as penitrating vagina.while penitrating vaina you must lean on h er so that your upper part of penis rubs her clitoris(Knob like structure on the top of libia)