Valentines is all about love and love is all about gaining the bliss of your loved ones. So the best way to celebrate V day is to something really positive and cosntructive for the people you love which provides them with ample amount of joy n happiness!!
Other
Answers
Celebrate it in night! If you don`t know, it`s very important!
You can have great fun if you want to celebrate valentine`s day. If you live in a big city or metro , i would recommend going out to watch a movie and have a nice meal together. Spend your time like you would do in a special way and give each other the chance to make you enjoy. i personally think you should have a separate private place where you both can share few hours in each others arms and enjoy great sex also. After all, Valentine day is made for lovers. It should be made of fun,happiness, laughter, sharing some sexy moments together .