Lost please help

Hello, I have been with my Fiancee for 14 years and we have a little boy together, at the moment I'm feeling that I can't stay with him any longer I'm a very chilled out person so during a row I don't shout n name call but he dose he tells me after that it's to get some sort of reaction from me, During the most recent row I was called the usual fat names and told me that he lies to me every day he hates my family iv listened to these sort ov comments for years. Recently i can't Stand to be around him he's terrible with money promises me things that never happen and he always manages to make a mess of things which I have to sort out. When I try and talk to him about these things he thinks I'm putting him down and starts an argument I feel like he will always let me down. I don't want to talk to friends and family because I don't want people to hate him, when he wants to be he can be a lovely person and my family and friends love him. What do I do???? I do love him I think and he's the father of the most amazing thing in my life and I don't want to upset my baby in any way

Just from reading this, he sounds like the typical abusive partner (bearing in mind that much of the abuse that happens isn't physical). Lots of people say mean things, but it's the binge-purge cycle (or yell mean things and then repent) you talk about that makes me think that. There are probably worse things than being bad with money, but it's just all of these things put together that make me think that this is an abusive, or at the very least unhealthy, relationship. The best thing you can do for your child is to get yourself out of that situation, whether that is through fixing it or literally leaving. Healthy, happy parents make healthy, happy kids. "Staying together for the kids" often has the opposite effect people think it will (I'm saying this only as someone who's done my graduate studies in Education, so I'm not a Psychologist or anything).