Partner working with ex

[Kambur52]

We have been together for 8 years and have children together. He's working in a highly paid job doing very important things. There was a job opening and I'm pretty sure his ex will apply and get the job. They were together for 7 years and I know he regrets leaving her. She's beautiful, has no children and everybody loves her.
I'm very insecure and I know I couldnt deal with them working closely and meeting on regular basis... Im pretty sure he would leave me for her.
He would choose his job over me and the kids if I would make him choose between the two.

Are my feelings not right? Am I being unreasonable?

Oh OP I'm so sorry.

I really feel for you. It's ok to be anxious about an ex partner and the possibility of them working together again. It's ok to be anxious when it seems she's always been the third wheel.

It's not ok for him to shut you down like that. I don't care what other posters say, that is not loving, empathic behaviour from your husband and father of your children. He should be reassuring you and helping you to feel safe and secure and he's not. Telling you that talking about it is a 'waste of time' is a shocking response.

My advice would be to get into counselling for your anxiety. It sounds as though your anxiety stems from being unable to control outcomes (I have this too). You can only control yourself. What you can do is have a plan b clear in your head so that if your worst case scenario does happen you know exactly how to get yourself to a safe space financially and mentally.