Valentine's Day card signoff (and a hint to this puzzle's theme)

Question:

Answer:

XOXOX

Length:

Similar Crossword Questions:

Gift card phrase, a homophonic hint to the puzzle's theme
Draftsman's tool (and a hint to this puzzle's theme)
Question that follows "O Brother" in film ... and a hint to this puzzle's theme
Molecule that sends amino acids to ribosomes ... and a hint to the theme of this puzzle
Cassette deck feature, and a hint to this puzzle's theme
1987 Costner film, and a hint to this puzzle's theme
NBA military appreciation initiative, and a hint to this puzzle's theme
Singer with a 1962 #1 hit that started a dance craze (and a hint to this puzzle's theme)
Change, e.g., and a hint to this puzzle's theme
Hip-hop mogul, and a hint to this puzzle's theme
Group with a hint to this puzzle's theme
1997 Kevin Kline film, and a hint to the puzzle theme hidden in four answers
Press time (and a hint to this puzzle's theme)
1999 film whose title is a hint to this puzzle's theme
___ to school . . . or a hint to the puzzle theme suggested by the ends of five answers
Drillmaster? (and a hint at this puzzle's theme)
Phrase indicating slight progress, and a hint to this puzzle's theme
Tyro, and a hint to this puzzle's theme
Delightful, and a hint to this puzzle's theme
Decorative physical changes, and a hint to this puzzle's theme
Post office activity, or a hint to this puzzle's theme
Cozy inn whose abbreviation is a hint to this puzzle's theme
Tip, and a hint to this puzzle's theme found in five answers
Final attempt to hook up among college students ... or a hint to this puzzle's theme
Mall map phrase, and a homophonic hint to this puzzle's theme