My ex-girlfriend had an abortion without telling me. How can I move forward?

you need to realize this isn't your fault she should have told you the truth from the start. She is in the wrong here so stop beating yourself up about this. I know its hard but you have to move on not every girl has an abortion and I bet the other girl who you think has had an abortion probably didn't. I think your more paranoid over this then you should be. I don't blame you for hating her but in time you will move past this. But next time use protection until you find the right one that way you don't have to worry about girls going behind your back and having abortions. Good luck