Here are some valentines I just made.
A guitar hero one for the man (crazy on you is our song)
The weird blue/yellow coloring is just from my camera
The inside says "100 %, five stars, on expert!"

A Katamari one for my roomate
inside says "you've rolled up my heart"

And these are some ones I made last year using photos from a stock photography catalogue

Back: We're out to steal hearts

Back: For your love!

Back: I just happened to find you passed out by the toilet

Back: You said you just got new contacts

Front (it's kind of hard to read): A good friend is like a rare bird
Back: Who sometimes poops on your windshield

Back: But Freud had a better idea

Back: But I wanted to give you my heart