So to preface this, I am a college student, have been with my boyfriend for nearly a year, and we're positive we want to spend the rest of our lives together.  We discuss endlessly about the lives we hope to live and have made it very clear that we want to be together.  However, when we talk about future plans, we always agreed that we would have at least two children.

I know I can't do it though.  I've spent weeks researching the process of pregnancy, raising newborns all the way to adulthood, and specifically the effects of pregnancy on a woman's body and the sacrifices a parent has to make.  I know I can't handle any of this.  I'm barely scraping by with my own issues within both myself and the insecurities pertaining to my relationship.  I have no clue how I could even get through the early stages of pregnancy, all the way to birth, and especially handling a newborn baby.  Worst of all, I'm ABSOLUTELY positive I would resent my child for stealing my partner away from me (I am an extremely jealous borderline).

Not to mention that I cripple easily in high stress situations, easily lash out on others when I am stressed, and am scared that I would hurt my children this way.  I should probably also note that I have had an on/off addiction to cutting for around 6 years now and I'm not sure if I'll ever be able to stop.

I have voiced my concerns with my boyfriend and he basically denies it, saying my empathy and experience with my own narcissistic parents would make me a great mother, when in fact I am very emotionally unstable and I'm absolutely positive that I would resent being a mother.

I really need advice and maybe some guidance, as a lot of people advise to break up now to avoid the heartbreak later of not being able to give my boyfriend the children he so desperately wants.  I know that if we were to not have children, he would probably spend the rest of his life wondering what it would be like to have them.  I cannot allow myself to deny him his desires, and think he might be better off with someone else who can give him healthy children.

I know this isn't a relationship subreddit but I'm hoping some of you guys with BPD as well can maybe add your two cents and tell me if I'm worrying too much or if my concerns are valid.  Also if you guys don't mind, I'd really like to hear if I should let him break up with me over this.  

Thank you.