There are no coincidences in life. That person that wandered in and out of your life was there for some purpose, even if they caused you harm. Sometimes, it doesn't make sense the short periods of time we get with people, or the outcomes from their choices.
Stop getting involved in relationships for the wrong reasons. – Relationships must be chosen wisely. It’s better to be alone than to be in bad company. this exactly how I feel now that I have had this one to many times