Put it this way – what do you have to lose… You’re either going to get back together, or you will both move on. I thought the same thing, but people were telling me – you’ll be surprised what happens and how much better you’ll feel.
Try doing no contact. I’m in my 9th day of no contact and it was tough at first, but it seems to get better everyday. I have ignored 2 texts from my ex and she has started asking our kids if “I’ve talked about her” or have even mentioned her (which I haven’t). You have to get your ex wondering what is going on and why you aren’t communicating with them.