On Winter 14, give a dessert to marriage candidates or your spouse.
Give Desserts for Valentine's Day
Valentine's Day occurs each year on Winter 14. To participate, give a food from the Dessert category to marriage candidates if you are not married, or to your spouse if you are married.
If your character is female and not married, you can give desserts to Wayne, Ford, Ludus, Yuzuki, and Hinata. If your character is male and not married, you can give desserts to Lisette, Iluka, Siluka, Komari, and Kasumi.
If you are married and you give a dessert to your spouse, this will start a special event where you share a meal together.