My friend

I think Sov has the right approach here. Approach him at least once more, but be calm and respectful, saying that this is just what you think, but it is ultimately up to him. Just tell him that you're watching his back, as a friend should. No matter what he decides, support his decision (at least publicly), and in the end, when she dumps him, you'll still be friends and he may listen to your input more in the future.

Well, things got better in a sense. But what the girl did was cold-hearted. He asked her out for this Sunday and she said yes. Now all of a sudden she says it's over and she doesn't wanna date him.

What a bitch. All this advice is what I would have given, there's not much else you can do to help.

I hope she suffers. That's a horrible thing to do. Tell your friend to IM me, I'll smack some sence into his head. And he wont get mad at you! He'll only block me in the worst case scenario.

If he does so, then be sure to post the convo, I'm sure it'll be plenty entertaining.

Just leave him alone, he have to learn this kind of shit one way or the other.