I am the King. Even if they themselves struggle, they gain a concept of how someone could do it. Most are damaged by divorce, not done their inner work to heal, are damaged by their parents, scared to commit etc. Now I'm not saying that it's acceptable to be put on the back burner and be left to fade in the background, but there needs to be a level of understanding to his actions.
Of course, some men are consummate bachelors and will forever revel in an unfinished upstairs, but most men are excited to enjoy the chapter in their lives where they can begin to start a family with the woman they love. He will appreciate you for it. Are you ready to make room for someone else in your regular routine? Likewise, be honest with her. Obviously this has not helped my dating game.