Why do newlyweds break a champain glass at their wedding?

Question

I've been to a wedding and the couple broke the glass after toasting the people. What's the meaning of this? Is it done only at jewish weddings or Greek weddings? I understand it must be a custom but where did it began?

Answer 1

It is a Jewish custom that is gaining popularity among others.
It represents several things.
A couple are:
The fagility of marriage.
And the marriage will last til the shards are made whole again.

Answer 2

It means the marriage will last till all those tiny glass or put together in one whole piece. but nothing should be left out which is impossible, so marriage will be 4ever.