Why did my ex tell me about his new job and school?

WinCx3d
My ex and i coparent. We don’t have the best coparent relationship but we are getting there.

Today i called him and asked could he watch out daughter because i wanted to go out Sunday and i always have our daughter on Sunday nights. He seemed like at first he didn’t want to but eventually said “go ahead I’ll watch her”

A few minutes later he texts me and says

“I’m just letting you know I got this job interview at my hometown in Franklin stl tissue i got interview wed i be working three days 12 hrs and Im going back to school to get my master degree 📜 .. wel that’s if you even care”

Why did he say that
Why did my ex tell me about his new job and school?
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