Valentine card
Valentine's Day card

And in the process she has developed a character who is a real Valentine card.

I still haven't heard back from the young lady who sent me the Valentine card; did you really mean it?

The first mass-produced valentine cards were sold in the 1840s.

As for Valentine cards, some people (of both genders) buy up to ten!

Valentine's Day then comes and the gang brings valentine cards for everybody.

And nobody else's Valentine card should persuade you that loneliness is the only alternative.

Valentine cards are especially useful, because they say what you cannot find words to say yourself.

Valentine cards have come a long way since the Victorians invented them.

The set started as a valentine card in my mind, filled with little old lady lace.

Although a week early, a Valentine card looms large.