You couldn't just give up hope because one day you said to each other,'that's it'. You'll only be able to give up hope when you are ready, and there is no telling how long it might take.
All you can do is be kind to yourself and try to ride the storm until the pieces of your broken heart gradually gather themselves back together again. And they will. One day at a time. Just do your best every day to take good care of yourself and the boys and you will find the joy of life will creep back in, gradually, almost without you even noticing. Until one day you suddenly realise that it isn't hurting any more, and then you will be free, and a much stronger wiser person than you were before.
I've loved and lost before and felt that there was no point in anything, that all I wanted to do was get through the day if I could only bear the pain for one more hour and one more after that, just make it through till the evening and hope for the next morning to feel even a tiny bit better. And you think it will feel like that forever, it seems you have already been there as long as you can remember and that your pain will have no end.
It does come to an end It does. You may not feel that, but you do know it, don't you? Those mornings where you just hate the day ahead of you, those nights where you lie huddled and tortured with the thoughts of what might be going on in another bed somewhere else...they all come to an end eventually. I know you can hardly believe this but one day you won't give him a thought, what he is doing will be of no interest to you, you won't care any more. Because you will be over it, and you will be happy again and you will be loving someone else, someone better who is not going to put you through this.
I promise, I promise, I promise I am telling you the truth. You will come back from this and you will be happy again. Hang on to that with all your strength.
And while you are waiting for this to happen, I am here, and lots of other mumsnetters who really care about you are here. We hold each other up - we take it in turns, sweetheart. One day I might need you to hold me up, and when I do, I know you won't let me down.