You know, sometimes, you will find that your memory, which situation had passed already is disturbing you. Every moment they are coming and showing you what actually happened with you, which you ignored, and didn’t give time to think about. Our subconscious mind keeping all information and when you have some time (mentally free, when other situation isn’t disturbing you) those will come and set as a block after block and show you why people did what? What was their actual intention. You will find you had trusted many people who are not actually a trustable person. Those people’s behavior will make you so upset that it will be difficult to go forward.
Listen, forget or ignore about everything which already happened. Focus on your future. Because, past had passed already, so no use to think about them. Go forward, make your life beautiful.