Even though I actually wanted to move on with my life, despite my best effort I found my self thinking about him. I was left to wonder, "Why in the world can't I forget my ex boyfriend".
Clearly, it takes time to accept that the relationship is over. It's natural to occasionally think about your ex after a breakup. However, if it starts to have a negative effect on your day, you need to put extra effort to steer your thoughts away from your ex boyfriend.