my man liking other girls pics!

So not too long ago I seen him like this chicks selfie, didn't care whatever. Every time after that he'd always shut his phone off if I even looked near him. So I looked through his follow list and been clicking on the girls. Not only does he like every one of their selfies, but also liked their bikini pics!!!! I've noticed he doesn't like the photos with their "mans". There's a girl he used to work with, I always got a bad vibe and knew she liked him because she wrote him a note going when he was changing stores that read "I'll miss you, you get em tiger ;) come back and visit me ❤️". Bitch no! But see he follows her too, and every one of her bitch selfies, he likes! He barley even likes pics of me and OUR child!!! What the flipping fuck!