Intercourse can be painful for a guy. A few possible causes:
·        You start with intercourse too early, when the vagina is still dry. Wait till the girl is excited and her vagina is very wet. You can for instance first go down on her. You can also use a lubricant (water based). You put some on the penis and/or at the entrance of the vagina before you start coïtus.
·        Your foreskin cannot be drawn back, for instance because it is too tight. By moving your penis back and forth in the vagina the foreskin might be drawn back too far, which hurts.
·        The frenulum is too short.
·        The glans is oversensitive.
·        You have a STD, like herpes or genital warts.