To a heart broken friend

"The worst thing a girl can do is make a guy fall for her with no intentions of catching him" was the quote on my friend's gtalk status. The quote caught my eyes and I couldn't help but spend some time thinking about the quote and then my friend.
Yes my friend had a break-off and he is yet to get over it. He had a good time but from the outset I kept telling him not to go ahead with it; but he didn't listen to me and went ahead. It ended in a heart break and it hurt him. I am sure he will get over it but the problem is that he doesn't want to get over it. No matter how much I try I fail; yes he has been stubborn always.
A few days back he did something I never expected from him. I am not going to mention it here but its something he shouldn't have done. In the process he lied to his parents which again is something I don't approve of.
It wasn't meant to be like this. I have seen people go through this before but when it comes to someone so close to you, you can't help but feel - it wasn't meant to be like this. He never took life seriously, was always this fun loving guy but now he is no more that. He wouldn't say no to me or to his friends but at other times he will just spend time sleeping or doing nothing. He has lost interest in all the things that were of his interest; or for that matter he has lost interest in everything.
Coming to his relationship I have a feeling that he knew it from the first that its not going to work. Secondly he also kind of knew that the girl was using him just to get even with her boyfriend (he is going to kill me for writing this). But he still went ahead with all his heart and believed that he could succeed in getting her. It did not work out - I would say it wasn't meant to work out; but then I guess if I was in his place I would have done the same. Of course if you love someone you should at least try to go for it. But there comes a time when one has to accept the things as they are and move on instead of clinging to the non-existing hopes. I tried to make him see the things but he didn't want to see them. And now that the girl has asked him to stop harassing her (yes that's the word used by her after making him fall for her) my friend is even more frustrated. All he wanted to do was to hear from her why it won't work. I know it doesn't matter now but it matters to him. Maybe the girl is right in not wanting to talk or confront him as she doesn't want to continue the relationship. But he feels she owes him an answer.
It upsets me to see my friend hurt - it really upsets me; sometimes angers me. And I can't blame the girl because my friend knew from the start the things and the consequences. He took the risk well aware of the ill-effects and he is facing it now. I don't know how the girl is feeling and I don't care. And I have no complaints from her save one which is 'Why didn't she stop at the outset when she knew she couldn't continue?' For a few good moments she destroyed so much of someone. Is it fair? I guess it is; in today's selfish world it really is.
To my friend I would just like to say that "It happens dude; it happens to everyone. You are not the only one going through this. Keep the good memories and move on. Its difficult I know. But I also know you and I know that there's nothing you can't do. You can't undo something that has already happened but you can always paint a new picture. All you need to do is start afresh; and with a positive frame of mind. And you will always have your friends standing with you no matter what."