Best is best friends can spend more time with him.
Go out with him. Divert his attention to think something
else.
Don't let him think too much.. Emo is bad.. when ppl Emo.
They will most likely got depression. I got that before i know
how terrible it is.. A bit will feel upset and will cry for
nothing.
Guys also will have depression. So keep him company is the best
console for men i think.
You can ask him go have supper, la kopi. No need to ask him ok
or not . Just go out with him. No talking also can. Or Do some
sport like Running. ( Running is my best friend recommend to me) it
work well cos when sweat is all out.. ppl feel lighter and refresh.
Slowly he will not think so much and move on.