I am devastated over my breakup

Aww honey Im so sorry about this! My heart broke when I read this. I understand the pain you feel because I have felt the same way. No, I have no children so I dont really know that aspect of it. But I did grow up in a blended family. Yes, it will take time to get over this but in the end you WILL be a stonger person. Give yourself time to get over it and make sure you dont just jump into another relationship to feel better or try an get over him more quickly. Ive done this and from experience and from older people who know I have learned that that is not how you get over it. You just end up bringing the problems and distrust from your old relationship into your new one. Remember not all men are like that and there are ones out there that are kind and want a good woman like you to commit and be loyal because now a days there is not very many men or woman as loyal as you. So do procede with caution into your next relationship but DO NOT assume the new man will be like the old one. Because if you do start to accuse New Hunny with the things Old Nasty Hunny used to do it could drive him away. And for the sake of the daughter try and keep peace between you and him. You dont have to like anything about him but dont bash him or try and make her choose favorites. In the end it will all work out. Especially when you find that guy who will treat you like a Queen. Then you'll look back and be like "Why the heck did I waste my time on you??"
Good luck Hun!!!

My heart goes out to you. You must be frying alive. Being badly hurt once is bad enough but when it happens repeatedly its devistating. But you will get stronger if you try. Life always presents new opportunities and nothing stays the same for those who keep moving.

Just a note of caution though. I would always be suspicious of these men who chase and persuade women over time. Men who are addicted to challenge often form so called friendships until the gloss wears off. Barriers within yourself might also push people away in subtle ways and then you end up repeating mistakes.

Do concentrate on bringing new things into your life, it will help and Im sure you will see some light on the horison soon.