I think that your best revenge of all could be to live well. To repair YOUR M and make it strong again. He will destroy his M all on his own. You really want to make him miserable? Let him dig his hole deeper and deeper, so when it finally falls apart he will fall even farther and longer than if you were to stop him now.

We dont all have to agree on here, but you asked for advice, and I gave you my thought on it. Thats all. I think that its sad whenever any relationship ends, sentimental, I know. But you dont have to dwell on their M, yours is the one that needs attention and focus right now. If you want to expend energy on something, put it into your M. Or write the letter, say everything that you want to, but dont send it, burn it.

I guess I gave the wrong finger to the wrong man...