Financial talk

I'm having a hard time with the whole 'kid sharing" thing. I try so hard to fight the resentment towards my ex, as he had a drug problem and had abandoned us for a while. Stole money etc... He is working hard on staying clean now, and I never speak bad about him to his children. I know they have a right to a realationship with him if he is willing to try to clean up his acIt is just so hard for me, because Ive wanted the whole kids/marriage thing since I was a little gitrl. I never thought my kids would ever be without me for a holiday a weekend, etc. I have found someone new, and everything is wonderfull, and we will be getting married soon. He has been a better father to my kids than their own father, and they love him and their dad. I know I'm lucky to have it this way. Will I ever get used to this sharing kids thing though? I hate it so much ,and it seems so unfair, although I know its the way it has to be...