Advice ?

Hey! How do I get over the fact that my ex will do everything for the next female, knowing that he’ll do what I wanted him to do, for her without having to be asked? How do I get over the fact that he’ll spoil her, be loyal, and give her what he wants, why wasn’t I good enough? Why didn’t you do all those things for me? How do I forget about him? How do I move on? How do I get over the fact that he’s moved on.. I’m not completely over it but I will say I’m not as sad as I was, it’s been a month. I still wish things turned out differently though.. :(