This is gonna take some time. For real.
So first things first: you have to admit to yourself the two of you are not coming back.
With that in mind, you have to fill your agenda in its free spaces, no more free time to overthink. Don`t let the mind to get the worst out of you; after doing a lot of activities remember you must always have time to meet and date girls. Otherwise you would be making up excuses not to move on, I`m talking from experience here.
The main point is selfwrought here, you get the idea.
Move on, next her, start a new life with a new girls and ejoy it.
Thanks man, that was really great honest answer, going beyond the usual get with lots of girls. I will try to keep busy and do what you say.
if anyone else has any advice/experience with this sort of thing really appreciate hearing it.