What does it mean when a guy shows you his baby pictures and shows you pictures of his closest sibling?

Anonymous
I didn't bring up the topic. He just randomly sent it. No, I'm not dating him. After that, we talked about how many siblings we have. Then he told me I'd have 4 kids and I told him I only wanted two boys or two girl. Then he asked me if I wanted a boy and a girl. Afterwards, he told me he wanted a boy and a girl.

Not that it's relevant but he's 34 and I'm 24
What does it mean when a guy shows you his baby pictures and shows you pictures of his closest sibling?
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