How long should I be with him before moving on to someone who is willing to have more children? I really want one more?

millyneenee
I do date a lot of older guys. I am 24 years old with one child. My boyfriend is 43 with three children. I want at least one more child. I made a joke he said he didn’t plan on having more kids , at least now now.
How long should I be with him before moving on to someone who is willing to have more children? I really want one more?
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