Dream about leaving boyfriend is an evidence for some sort of warning or danger that you have found yourself in. May be there someone who is interested in you. You fear making mistakes or tripping up on some project. Your dream is a sign for your past experiences and feelings you associate with that particular person. There are some issues that you are trying to sort out.
Leaving boyfriend dream stands for regal power and authority. You need to know when to act and to act quickly. You have no lingering doubt or mistrust in your relationship. Your dream stands for change and regeneration. You are going through some major emotional turmoil.
If you dreamt about leaving boyfriend:
Someone will have an idea that you think is unrealistic but after closer examination, you see that it can be very beneficial to you and the track you are on. When in doubt, take the more creative approach. There is wisdom to be found in fantasy.