My first time on here

Hi this is my first time ever doing something like this.  My kids father an I split up a months ago. But the problems is every9ne I try to move forward he will get in contact with me. An tell me all the things I want to hear. Like how he will change we will make it work this time. For us an for the children. An so on. I have gave in several of times even with having that gut filling that thing will not change. They will be the same as befor. An never fails every time it ends up right back to the same thing. So this past time I finally told my self I'm not doing this anymore. Well I have recently found somebody new. We are not a couple we are just talking. My problem is half the time I fill wrong for moving on an other times I am happy that I did.