The correct form for the holiday is “Valentine’s Day” with an apostrophe and capital V and D.

Quick answer

  • When you mean the day/holiday , write: Valentine’s Day.
  • When you mean cards or people , you can use valentine (singular) or valentines (plural):
    • “Be my valentine.”
* “The kids handed out valentines at school.”

Saying or writing just “Happy Valentines!” for the holiday is common in casual speech, but it’s not considered grammatically correct in formal writing; the standard is “Happy Valentine’s Day!”

Mini breakdown

  • Valentine : a person you’re romantically interested in, or a card/gift given on Feb 14.
  • Valentines : more than one valentine (several people or several cards).
  • Valentine’s (with ’s): possessive form—used in Valentine’s Day , “Valentine’s party,” “Valentine’s menu,” etc.

So for your phrase “sit valentines or valentine’s,” if you’re asking which to use when talking about the day, you want Valentine’s , not Valentines.

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