What Causes A Relationship To Fail?
When a relationship fails, you need to take that as an indication that something went wrong. If your boyfriend left you, then it was likely for one of two reasons: Either the relationship was becoming stale because there was not enough of you in it, or the relationship was getting too claustrophobic because there was too much of you in it. Either way, one of these causes is going to lead to relationship suicide. If you are asking “How can I get my ex boyfriend back?”, then you need to start looking at which of these led to the break up so you can act accordingly.
Sit down and really take a hard look at your situation. What could have led to the breakup? Which of these things were your fault, and which were not your fault?