Are these guy behaviors considered flirting?

1 He totally stopped working and walked over to speak to me.
2 He shook my hand TWICE.
3 He spoke my full name really loudly like he was amazed.
4 He asked if I still lived on the same street I used to.
5 He asked if I ever had kids.

Btw... We used to date over 5 years ago.
I'm curious if he wants back with me.
How do you read this event?
 
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