I'm planning to break up with my boyfriend over text message.
Why do you want to break up like that?
I want to break up with him without hurting him.
While your intentions are nice, it is still unorthodox, impersonal, and very rude to have such a serious matter be thrown over text. You are a coward for not facing him and just running away like this. You are hurting him more by just breaking up in such a way.
No I'm not! I wanted to do it since it's faster than seeing him in person.
Even if text messages are quicker, expediency doesn't matter when you're breaking up with someone. If you break up with your boyfriend via text message, you're going to seem immature. Talking to him face-to-face may be difficult, but it will make the break up easier for both of you.