How do I stop imagining him meeting someone else?

[Verysad1978]

I’m newly separated. And he’s moving out very soon.
I am dwelling on loads of superficial and unimportant things. Like people talking, the change in status in becoming single, the loss of a life together ahead (that’s not superficial I suppose)

but one thing I’m completely fixated on is this idea of him meeting someone. I don’t knew why. There was no infidelity. In fact I don’t know how motivated he is at all in that regard - he certainly wasn’t with me.
And yet I just keep thinking about there being someone else with him, in my kids’ lives, coming to things.
I don’t ever see myself being open to meeting someone again. I would like it in theory. But I think I’m damaged. Too suspicious, too wary, too tired, too much.

I don’t know what I’m looking for. But I wish to God I could just have the discipline to stop thinking like this.

Google
”automatic negative thoughts”
or
”refrain irrational thinking”
I do it.
I try to do self CBT therapy to stop myself doing it

This is pretty normal, he hasn't even moved out yet.

It's not pleasant but it's part and parcel of a break up I think. I'm not sure it's necessarily something that should or needs to be suppressed because I do think it's important that we let ourselves feel all the feelings that come with a break up. It's not really possible to fully escape dealing with negative thoughts when you're dealing with something as defining as a family break up.

But then I suppose there is a line between completely unhealthy thinking and normal break up thoughts and so I don't know where exactly you're at but if you're concerned about it or finding it deeply uncomfortable/distressing would you have access to therapy to help you get through these next few weeks/months?