Should I break up wih my boyfriend whom I love very much because I want to have another child and he does not?

I am a single mom who is dating a single dad we have lived togather for 7 months when we got togather I told him how I wanted to get married an have another child. he said that part of his life had already been done and he didnt want to do it again. after getting to know him and dating for a while I decided that I would be able to live with this I was in love and that was all I needed. I have just realized with a recent abortion that I will be able to live with the pain of the abortion but not of never having anymore children I realy want 1 more child and I feel that I have to choose between ginving up something that means so much to me to mold myself into his pre-planned life and giving up the man I am head over heals in love with. it feels like my heart is split in 2.