Happy Valentine's Day! Or, if you don't celebrate it, here are some alternatives:
1) Happy Galentine's Day - Just a day for some quality gjrl BFF time.
2) Happy Palentine's Day - A day to spend with your pals/friends, regardless of gender.
3) Happy Single's Awareness Day - A day to be aware that not everyone is dating someone else, or engaged or married. Single people deserve to feel happy on February the 14th too, and could use a reminder that they're enough as is, as well as encouragement that they'll find the right person one day, if that's what they want, but that it's also perfectly fine if romantic love isn't for them.