Should I be bothered by his work girl/s?

This isn’t a post of jealously...this is a post to see if I have the right to be bothered or not...

My SO works with a group of girls who all find him very attractive (yes I’m flattered) and they make it known everyday flirting w him and talking and going up to his desk. He tells me about it. But There’s the one girl in particular who sits next to him is always talking to him, sharing music and asking to take pictures...I found a pic that someone took of them in The office on his phone when we were going through old pictures the other day. She tries to act like a “bro” to him but I know that’s not her intentions.

Whenever he works over time she decides to work overtime and offers to take him home after. I slept at my house last night, if we sleep at the same place we drive to work together bc we work by each other, This morning she picked him up to get to work. Mind you, she lives a solid 15-20 minutes from him and we live in a crazy city so traffic is bad in the morning. Should I be bothered or no?