Dear Emiko,
My point exactly.
When I told you to "tell him how you really think about him", it means you'll say that you only think of him as a friend/brother (or something like that).
In case that still hurts his feeling, tell him that you'll rather be his friend than his girlfriend, because friendship is usually more solid than love. Therefore, even though you won't be his girlfriend, he still doesn't lose you in any way. So the rejection will be much easier hehehe XD.
I hope that helps,
Signed, BD