Even though you show your love all year long, Valentine's Day is the ideal excuse to shower your favorite geeks with an extra dose of x's and o's. Pick one of these 25 cards up for the physics know-it-alls, Star Wars sweeties, and robot-obsessed cuties in your life.
This ampersand card  ($5) is so simple, so punny, so sweet.
Show the softer side of your zobmie self with this romantic (?) love you for your brains card  ($3).
Your Missed Connections secret is safe with your beau and this cute card  ($4).
Not Sent From My iPhone
Electronic messages are a main form of communication these days, but take the time to unplug and send a sweet handwritten note  ($4) this Valentine's Day.
TARDIS + Hearts
With an inscription in the card of "who loves you, baby," how can you turn down a TARDIS card  ($5)?
Double rainbows  ($4) bring bring on emotions like happiness, excitement, and sometimes, tears of joy. Just like you.
Turn Me On
Xbox-lovers won't be the only ones to appreciate this punny turn-on card  ($4).
Pandas in glasses  ($4) have nothing but love for you.
Robot Conversation Heart Valentine
This multitasking robot  ($5-$8) offers the finest in Valentine's Day treats.
It's a Trap Star Wars Card
Admiral Ackbar's broken heart makes him skeptical of love  ($3), but you don't have to be.
Less Than Three
For your Valentine, less than three  ($4) means a lot.
Exactly My Type Card
Show your typography nerd you care with this adorable Exactly My Type  ($4) card.
Darth Vader Love
While we'd advise caution when it comes to following the red heart balloon  ($5), love knows no bounds.
Robots in Red
Robot meets robot. Robot falls in love  ($4). A timeless tale.
You Are My Singularity
Your love defies physics  ($4), so express it with this equally scientific card.
Yoda in Love
The master Jedi expresses his feelings in unusual yet beautiful prose  ($4).
Sherlock and Doctor Who Valentine
A Valentine proposal  ($5-$6) from Sherlock and Doctor Who? Now we're talkin'.
Show your sweetie it's love by finally relegating Captain Picard  ($6) to your number two.
Alien in Love
Ah, nothing is sweeter than young alien love  ($4).
Print this adorably geeky Pac-Man valentine  ($3) that says "I'm so glad" on the front.
Start with "It's not an error," and end with a shot through the heart  ($3).
QR Code Valentine
Customize your own message in this QR code valentine  ($4).
Without even trying, You auto-complete me  ($6). Is there a sweeter sentiment in the digital world?
Beep boop beep. Yes, it's my coding — I was programmed to like you  ($6).
Boo My Valentine
Super Mario fans, this Will You Boo My Valentine card  ($4) is just what you were looking for.
You > Inbox Zero
Proving that no digital clutter can hold a candle to you, Valentine, You're more awesome than inbox zero  ($6).
I Love You More Than This
Apple fans see their latest iPhone as precious cargo, so to receive an I love you more than this  ($6) card is worth its weight in gold.
Ron Weasley Valentine
Well if Ron Weasley says you're a keeper  ($4), it must be true.