Mostly it is painful for both boy and girl when they are having thew sex for first time this may be because they are in hurry to do the sex or boy tries to enter his penis before girl vagina being naturally lubricated or in the beginning girl vagina's hole is small enough not to make smooth entry of penis into her. It is also for the boy that he may torn his penis foreskin trying to enter it into girls's vagina and the girl may get pain due to breakdown of her hymen during the first sexual act.

Answered by Shrihari , an ibibo Master, at 8:40 AM on June 19, 2008