i dont think you should mail him. imagine the likely outcome, he'd never forgive you for making him break his promise, and youd have ended the relationship on an even worse note than now. at least if you respect what he wants then there may be a chance to relight the flamesof passion later in life, but right now i think you need to try to rip off the plaster and accept it's over, rather than slowly pulling it off and prolonging the pain.
did that even make sense? lol