Hard Valentines Day Sudoku

Not everybody in class gets this valentine! Hard Valentine's Day Sudoku ups the sudoku ante with less possible answers that require advanced strategic play to solve. There are hundreds of Hard Valentine's Day Sudoku games available at Valentine's Day Sudoku.com for you to test your sudoku skills on. Have a really long time? Try, try, and try again! Can you solve the puzzle in 18 minutes or less?