Boyfriend wants kids first before marriage

Whitney
Hello Ladies! I'm not sure if some of you are familiar w/my posts but if you are you know that I've been on/off with my boyfriend for 5 years! We recently got back together & things have been great. We're communicating better w/one another & less arguments. I'm starting to see the man that I fell in love with. This past weekend we were in such a good mood that well let's say the sex was on point. We've been together so long that we don't use protection but majority of the time he pulls out (not effective). He purposely ejaculated in me several times & admitted that he's ready for children. I'm at a place in my life where I want marriage. I want stability between us before we have children. He insists that he's ready for kids but not ready for marriage. It's been five years. I'm slightly confused....