For this card I found how to spell "love" in a bunch of languages. You could also use adjectives to describe your loved one in a card like this.
I picked a different font for each language (SNF has a lot of fonts with international characters, all the Premium Fonts and many Standard Fonts), and puzzled them together on a card. I liked how it looked with boxes around each word, but it can be done collage style, too, without the boxes. If you have certain words that are more important than others, make them larger (like I did with "LOVE"). Tip: to fill in holes, add DoodleBats.
For more creative ways to use fonts see this ScrapNgal blog.