at sight

Both of them fall in love with each other at the first sight.

If such a thing had been possible, his blood would have run cold at the sight.

And he had run away at the sight of her.

At the sight of other people they could not go on.

About love at first sight being something you believe in?

But at second sight the words seemed not so simple.

I used to fall in love at first sight several times a week.

If they were real, why not go with the idea of love at first sight?

Still, David did not believe in love at first sight.

Next time you would do so just at the sight of it.