What does it mean when he never looks at me when I’m Looking at him like he looks

Down and or is on his phone, acting like I don’t exist

Mind you i am the mother of his child

We’ve been sexual in the past with each other but not anymore we aren’t together

I can’t tell if he finds me attractive or not anc it’s driving me nuts

But when I’m not looking at him he’s looking at me....I can feel his energy like he’s starring and I’ve caught him when I glanced back really quick also I can with my Peripherals

(Side eye) ive seen him looking at me