Are You Happy Now by Hanna Jameson

At a New York City wedding, on a sweltering summer night, four people are trying to be happy.

Yunhas everything he ever wanted, but somehow it's never enough.
Emoryis finally making her mark, but feels the shame more than the success.
Andrewis trying to be honest, but has lied to himself his whole life.
Fincan't resist falling in love, but can't help wrecking it all either.

And then the world begins to end. The four of them watch as one of the wedding guests sits down and refuses to get back up. Soon it's happening across the world. Is it a choice or an illness?

Because how can anyone be happy in a world where the only choice is to feel everything - or nothing at all?