My son's dad/ ex refuses to have a mature conversation about our past relationship and if we are on the same page, today?

My son's dad and ex is wanting to co-parent with me but he sometimes flirts with me and gets a bit weird.

I've asked him multiple times if we can have a mature talk about our past and about how we both feel today, so that we can both be on the same page, but, he refuses to have that conversation.

He either ignores my messages or changes the subject.

Why is he doing this?

It's making co-parenting difficult for me cause I feel really uncomfortable when we are both spending time with our son (our son is only 6months so almost all the time I am present)

Why does he not want to have that conversation? We broke up over a year ago and we should be able to have these conversations now, that we have a son.

Why do you think a guy would refuse to have that conversation?

My son's dad/ ex refuses to have a mature conversation about our past relationship and if we are on the same page, today?
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