How can i break up with my boyfriend without having to break his heart?

i want to break up with my boyfriend because i don't love him anymore and i love another guy and the guy asked me to go out with and i went. then were going steady and i want to tell my boyfriend before he sees us together.How can i break up with my boyfriend without having to break his heart?
I don't think there is anyway to break up with your boyfriend but the best way i found is to tell him face to face and be honest, cause it will only hurt him more if he finds out later that you lied to him. Give him time as well to cope with your decision, he might decide that he hates you or loves you more and try to fight for you if he does let him down gently.How can i break up with my boyfriend without having to break his heart?
Just tell him that. ';I'm sorry, I'm in love with someone else.'; You're going to break his heart either way; you're cheating on him. I don't know why you care because people don't cheat if they actually care about the other person's feelings, so it's best to just be forward in this case.
It would have been kinder if you had been honest with him before cheating..He may be glad to get rid of you now................
whatever u'r gonna say or do, u'll break his heart anyway.. even if it's not because u're seeing someone else,but he will be heart-broken.. cuz he loves u. just tell him nicely anyway
The way i broke up with my boyfriend was typing online so i didn't have to hear or see his reaction so ya