The tradition of sending your sweetheart a Valentine's Day card really took off in the 19th century with the boom of inexpensive and reliable postage stamps. Postage stamps even allowed senders to take the Valentine's Day game to the next level and send love letters anonymously.
Turns out, we might have gotten slightly more sensitive over the years as our cards have evolved from Victorian-era passive aggressive roasts to pink, heart-covered sentimental poems. A Victorian studies PhD student, Rosie White, shared a hilarious thread on Twitter in honor of Valentine's day that will definitely make you happy you are living in 2020.
Don't want to be called an old hag if you're over 19-years-old? Don't got back to the Victorian era.