coup de foudre

He had done the same thing a hundred times before; but this, he told himself, was the coup de foudre—the thunderbolt.

It was le coup de foudre of a French writer on the affections—M. Stendhal.

When a thing like this happens—a genuine coup-de-foudre—a man is only a fool who doesn't face it and admit it at once.

But I happen to know its a love match: love at first sight; a regular coup de foudre.

Was he a man for a coup-de-foudre, the lightning stroke of love?