Me and my partner was together for 7 years we had a child together a house we both worked it was perfect then on my birthday he asked me to marry him I said yes then a month later we had some difficulties he left me in boxing day crushed my whole world I begged him to come to his family he just ignored me and blanked me then he started having contact with his son and git himself a new girlfriend introduced most son to her with out my knowlegment when I found out I hit the roof and made his life difficult then he started asking for money playing with mg emotions kind of flirting and his girlfriend knew nothing she found mgs in his phone and I had a talk with her there broken up now but I still feel like there's one last fight in me to give this a go and hope it works I love him so much and he's knows it I don't think he will have me back but I need to try I just can't give up can I?? I think deep down he's confused and that he's scared to camper home because he don't want it to go back to the way it was before I just don't know what to do for the best... Any advice please

You have not elaborated what those problems were between you, so its hard to give advice whether you try again, or just move on, but its obvious its his choice. What's also obvious is he got a girlfriend awfully fast after leaving it seems, or that's the impression I get from what you wrote.

I think a clearer picture is needed, more info, and background that led to him leaving, beside the possibility of some one else influencing him.