What to say to a close one who just got rejected?

My brother just got rejected by a girl he was seeing for some time. I know she liked him too and dont know what happened cuz he won't tell me. I know he was head over heels in love with her. It doesn't pretty often to him. He has never been a guy who would chase girls amd needed relationship. I would say he is a bit cold. Now he is absolutely broken. I have never seen him like this. He is really driven to become rich but now he doesn't do anything and just hangs out with his buddies. Is there a way to help him?

What to say to a close one who just got rejected?
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