Supposedly, a women's favorite thing to hear is:
"I bought something for you"
"I love you" "I missed you" "I've been thinking of you" etc.
fuck, my woman cant cook worth shit.
Japan's White Day is a little more PC, but if you play your cards right, they are isomorphic.
Main difference being that on White Day, you give to the girl, whereas on Steak and a Blowjob Day, the girl gives to you.