Jessica,
i'm sorry but I tend to side with your male companion. You should have told him. It is not the sole responsibility of the woman to deal with pregnancy; it takes two. What if you carried the child? Think about it for awhile. Why did you hide it from him? To me it sounds like he would have been responsible for what you and he did.
In short, if you love him be honest with him especially about something that life changing. You have a lot of talking with him to remedy this, so good luck. In the future make sure to use he pill, a condom and spermicide (you can buy condoms laced with it or separately).

I know you are right I should have told him, if I did carry the baby I would have definitly told him but I got scared because I found out that he has a girlfriend. I know he would have taken the responsibility because he is responsible but he lives 40 minutes away from me so I figured it wouldn't change anything if I did tell him, but I guess I was wrong, it was just all to hard for me to deal with, it's pretty scary being 16 and pregnant.
Thankx for your advice