Why did you talk to your ex pretending that you are single and not tell about talking to your ex to your boyfriend? My first thought is that you are still in love with your ex and you are in your current relationship just to avoid being single.

The first thing you should do is understand your own feelings. Do you love your current boyfriend and do you really want to patch things up? Or would you prefer to go back to your ex?

And why did your boyfriend go through your personal conversations?