<human>: My ex and I have been friends and family to each other for years and have a dog together. We have lived together for a few years now. 

We ended things on good terms - nothing horrible happened and we want to stay a large part of each other's lives - it came down to him doubting we could fix things whereas I had hoped we could.

After a few weeks I started finding some new activities to enjoy, I was going out with new friends, and focusing on myself. Then he told me he's found someone knew and thinks she could be special.

It's been a little less than 2 months after our breakup and she's already calling him her boyfriend. I want him to be happy, but I wasn't ready to handle all of this at once and I'm not sure how to.

I just want to skip ahead to a few months from now when I'll be happier and more past this. I know I need to get out and start living my life again, but I keep being reminded of her. How do you start the healing process so you can start living again? How do you get past that initial rough period?

Give me the gist of the text in a nutshell
<bot>: Over 6 year relationship, broke up on good terms, want to stay friends, ex has a new girlfriend less than 2 months after / Any advice from similar experience? What would you do in my situation to start healing?