I see quite a few huge issues with this.
I haven't seen this mentioned in the thread anywhere, but couldn't she just be lying? It happens all the time, girls say they are pregnant when they aren't, say the baby belongs to one partner when in actuality it belongs to another. If the boy is certain that he used a condom (regardless of wether she was on BC or not) and the condom did not break then the chances that this is actually his kid (if there really is a kid) are pretty slim. Notice I said slim, it does happen, but not very often, at least in my experience.
Also, I understand that men and women make the choice to have sex knowing that a pregnancy could result. HOWEVER, how is it fair for the woman to have the only choice once a pregnancy has occured. I know that it is her body, but it just doesn't seem fair. If a girl were to become pregnant she could have an abortion without the consent of the father, right? Even if he really wanted her to keep the baby. She could keep the baby, even if he really wanted her to terminate. The only time a father has a whole lot of choice is if the mother decides to put the baby up for adoption, because without his signature the adoption won't go through. I don't really know of a way to fix the situation, but it just doesn't seem fair to the guys.
As a teenage girl if I had become pregnant and the guy didn't want me to have the baby I would have let him sign away his rights if I chose to keep the child. It wouldn't have seemed right for me to make the decision for both of us.
Dana