What do you do when a breakup is the main thing on your mind

It's been 2 months. But thoughts of her won't go away. I can't talk to anyone irl about it. Even posting here about it will get old after a while. So then what do I do with all these emotions? I have a good life. Good friends, a job, career, etc etc. So it's not like I'm staying alone sulking and thinking of her. But she's a constant thought on my mind. I don't know what to do.