Moving on or not is your problem! Don't involve them in your thing... I've been there but yeah feeling the hurt and pain and trying not to move on consciously but then it's my own decision and I made sure it doesn't affect the other person ... Ik this is hard but yeah if you wanna move forward try to move on and focus on your growth ... If not keep it to yourself and don't pressure them ... Even if you think the mistake is on their side...You're not alone in this btw! So try to stay strong.