The crossword solutions for the term 'LOVE YOU' are PSI and WHYDOI. PSI is an abbreviation for the Greek letter ψ, which is the 23rd letter of the Greek alphabet. It is often used in science and mathematics to represent the wave function in quantum mechanics, as well as in other fields such as psychology and engineering. WHYDOI is an acronym for 'Why Do I Love You?', a popular phrase used to express love and affection.