Time is the only thing that heals all you can really do is try to keep yourself busy and try not to hang out with her as much but what is mostly going to happen is...

1. You are going to over think things and think she is the only love you will have in your life.
2. You are going to hang out with her and not listen to me because ..."its different"
3. You are going to get mad at her for random things and be on tilt for a bit.
4. Jealousy

I don't blame you for taking any of my advice but in all honestly life goes on and what can you do about it you know...

So I just suggest keep the good terms but you can be really hanging out its going to make things pretty hard since it was a long relationship. If you want any more advice PM me.