I think my 16 year relationship is over

So we've been together for a long time ag c and in the back of my head I knew this would happen.

We were each others firsts and onlys, so none of us has experienced other people and I think it's getting to him now.

He cheated. He didn't sleep with the woman, it happened over a period of like six months (a coworker).

When I found out he begged and pleaded and told me he'd try and all that. Because he didn't sleep with her I gave him the chance.

But he sometimes forgets he's with me and will look at his WhatsApp contacts or browse the net and make little comments to himself that he thinks I can't hear. How that ones gorgeous, how hot this one is. How he wants to have sex with that one. He doesn't do it on purpose, that's obviously how he and is coworkers carry on and it's just habit.

And that just kills me. My self esteem has taken a serious knock. I over evaluate and over analyze literally every single thing he says and does. I look at myself and judge myself for not being good enough.

I am having such a hard time moving on from this that I don't actually think I can.