First off if you to brake up with your boyfriend, you got to be straight forward and tell him gently. Tell him his fault and his mistakes.
First off its going to be very dificult, but you have to be strong and gentle at the same time. But honesty is best and it helps the rejection.
Well never understand the depths of pain in this world. When a person is hurting I believe that at times that person is very confused, and doesnt mean to hurt any nice person!
I don't know why, but sometimes when a person goes through it and is hurting that person doesn't see everyone one he's hurting.