Are both teenage boy and teenage girl blame for teenage pregnancy?
This depends - if a boy forces a girl to have sex and she later
finds out she is pregnant, this is not her fault, as the pregnancy
is the result of sexual assault.
If the boy is more than 3 years older than the girl, or if she
is under the age of consent and the boy is over 18 - legally she is
not to be blamed for the pregnancy - as she was not old enough to
consent to having sex.
Those exceptions aside - if the boy and girl equally consented
to the sex act - they are both equally responsible for the
pregnancy.