Would my boyfriend change his mind about wanting kids in the future?

My boyfriend told me he doesn't want kids at all out of the blue and I told him I want kids in the future so we decided to end the relationship for a bit because we were not compatible in that way. Then he asked me for him back then I took him back. So I am deciding to stay with him because it is hard for me to find someone else. Why would he mention out of the blue to me about him not wanting kids at all? Ever since I took him back will he eventually change his mind?
Would my boyfriend change his mind about wanting kids in the future?
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