My girlfriend's car got broken into and I am not going to tell her.
Are you serious? Why don't you want to tell her?
She has insurance. I don't want to bother with it.
She would want to know. It's important to let your girlfriend know that something happened.
We have a lot of problems with each other, so I don't want to add another thing to argue about.
But she will find out anyways when her insurance contacts her. Even if they didn't you should tell her important things like that so that she can take some precautions.