Sorry, but I don't think it's anyone else's place to say "give him one last chance" - it's no-one else's choice is it? Only you can decide what's best for you and your family. I cannot imagine how hard it must be for you right now, but from supporting others who have been through the same thing, I do know that it does get easier. And I have also seen friends split from useless arse holes who can't step up and accept the responsibilities that go hand in hand with being a parent and then meet wonderful blokes who CAN do what's needed to raise a child. You won't believe you are worth the latter if you remain tied to the former. Just because someone gave you their sperm, doesn't mean they're automatically a great parent. It takes so much more than that. The simple answer to your question about why didn't he want to change is that he chose not to. You can't do much about that, but you can choose how you respond to his behaviour - you can hang around and hope he'll see sense - or you can get on with your life, move on and focus on being the best mum you can be. It's a massive cliche but it really is his loss. Take one day at a time - surround yourself with family and friends who can support you - and be kind to yourself too. Maybe pick one thing every day as a feel good treat - could be as small as a marshmallow-topped hot chocolate and a couple of hobnobs, to a soak in the bath or a glass of wine with the girls. You'll get there hunni, really you will xxx