I think, having read why you slit up, that you must force yourself not to think about it anymore.
I have been over and over and over situations in my mind, situations that are never going to work out right. Going over them doesn't help whatsoever, it just keeps me in the misery.
I think your best bet is distraction. You can have ten minutes per day thinking about it, but then you have to force yourself to think about other things.
This guy is not going to give you what you want, which is babies and a family, therefore you are GOING to have to put it to rest and move forwards, so you CAN find that. Any thinking about him is stopping that future.
I think a bit of grieving at first tho, but in essence, when your head hurts, stop banging it. You have done he right thing, the only thing - get to bed now and go to sleep and let the days roll by. You're going to be meeting someone new soon. This guy is not your ideal man xxx sorry, not sorry xxx