What's the best way to end a relationship?
To end a relationship peacefully, schedule a time and place where it’s convenient for both parties in an ambient environment with no distractions. Have a honest conversation with your partner in such a loving manner that will allow him/her to understand your perspective.
Help them reasonably understand what your decision is without having a heated conversation.
Understand that he/she may not reason with/or like you and that you may both be operating on different emotional levels.
Be a listener and also try to see from there perspective. Decide if you wish to remain cordial and end your meeting in a friendly manner.