Personally I think every day should be full of love not just one day that it is commercialised on, still its a chance to show the people or plants in your life that you love them!
Later I intend to give all of my plant leaves a dusting because I have been neglecting them a little as I have been engrossed lately in writing my first book, which is a psychological romance. I found myself crying as I wrote it like some weirdo. I have also started my second book which is a historical horror.
So how do I clean the leaves of our plants? With love of course lol no I use a microfibre cloth and water. That is it, and it removes all dust and any dickhead plant pests along with it. You should clean your houseplant leaves at least once a month or more really to remove the dust as without the removal your plant will begin to struggle to absorb the suns rays which are vital for plant health. Some plants have leaves that are impossible to wipe clean as it would take you hours so if you don't have the time you can always give your plants a regular shower.
Give your plants a bit of love and happy Valentines Day!