I fantasize about my ex who mentally manipulated me while we were together.
What did your ex do to manipulate you?
He told me on my wedding day to stay with him forever.
While it is difficult to untangle yourself from a manipulative relationship, it is important for your mental health to do so. Fantasizing about your manipulative ex will prevent you from moving on. Rather than risk going back to your ex and experiencing emotional turmoil again, try to discuss what's occurring with a mental health therapist so that you can better process what happened in your relationship.
You are useless. You are not good at anything. It shouldn't be a big deal.
I'm telling you for your own good. If you're not comfortable going to a therapist, talk someone who you trust.