Functional Valentine's Set can be found under Small Apliances.

It can be placed on the ground, table, countertop.

When you click on it you'll see option to purchase gifts.

Which will show a picker menu from where you can buy:

 3 different types of the craftable wine (red, white and rose). 

Roses (EA, my pink and white), 

Chocolate box (you can open it and in your Sim's inventory will appear 6 edible chocolate bonbons)

Heart-shaped cookies box (you can open it and 3 random coloured cookies will appear in your Sim's inventory)

3 different types of perfumes from the Perfumery