I'm going to tell my boyfriend that I never loved him.
Why would you tell him that you never loved him?
We need to break up
While it is acceptable to want to break up with someone, it should be done directly and honestly. Trying to hurt someone emotionally so that they break up with you is immature and wrong since it's adding even more hurt on an already painful experience. You should initiate the breakup yourself rather than try to get your boyfriend to split up the relationship first.
He deserves it, the guy left me after 6 years and go with a woman who has kids one time.
Be an adult and just end things. Neither of you seem to be happy and you are only hurting yourself prolonging this.