Wow your post really speaks to me about OW. I will come back to that later. I don't have much time to socialise with other parents, but what I did is that a couple of times I have volunteered to help out with the school discos. I don't know if you do it where you live, but I have been able to meet new parents. So maybe that could be a solutio for you. I wouldn't compare myself to other parents because often we don't know what is happening behin close doors and there are a lot of people out there who pretend to have this such amazing life but it's all smoke in the end.
As for OW it's perfectly understandable as you put all your heart in your mariage and because it's not longer there you feel like a failure. You aren't. We will still be hurt because we had a life all planned out with ex but the ending (to grow grey and old together) isn't what we wanted. I believe time will heal it all.
