I'm pregnant and want to keep it but my boyfriend wants me to get an abortion. What do I do?

Im 17 years old and I'll be 8 weeks pregnant on July 1st(I'm due February 10th 2012).. and my boyfriends 20 years old... I don't want to lose him but I don't want to lose the baby ive already created a little bond, and i don't believe in abortions... Hes never had a real job he just does mountain biking videos for friends and gets paid for it, but has no steady income.. I work about 20-30 hours at a clothing store and plan to finish high school online this summer, and go to hair school in september.. He says if I keep the baby that hes going to leave me and his child and doesn't want to look back, and if he comes around its cause he feels like he has to not because he wants to... I'm scared to have a kid at such a young age and being a single mother (I'm not sure how I'd be financially) but I know I could do it and that I'd be a great mother (I've always had that motherly instinct(I played with dolls till I was 13.. LOVED THEM!!)).. Any help or advice is much appreciated!! Thanks for reading this and responding!!