Although many of these ways are the coward's way out, it does open the door to have a discussion about breaking up,especially when your partner thinks everything is good.
Although this is a very cold and impersonal way to break up with someone, it does get their attention. After the initial shock has worn off from getting a "dear John/Jane" text, maybe then you can have a real conversation.
Just as cold as a text message, an email can be an effective way of getting someone's attention especially if they are avoiding dealing with the reality of your relationship.
Breaking up with someone over the phone may be easier when you are sure that they will react in a violent,angry or otherwise unhealthy way.
Leaving a letter for your partner to read explaining why you are breaking up is easier than actually speaking to them in person. It is the wisest thing to do to avoid angry public confrontations.
Face to face honesty is really the most respectful way to break up with someone. Considering that you had a relationship and cared about the person at one time, sitting down in private and breaking up is the right thing to do.
select one here...