Until and unless you give it away. Yes, that is the refrain from a children's song learned many, many years ago and it holds true today. When you hang onto love, you strangle it. When instead you give it away freely to all you meet, it grows exponentially and the good feeling it brings and gratitude it creates makes the world a better place.
It can feel a little strange at times to give away something so precious, yet you must do so in order to find it coming back to you in ever greater quantity to a place of infinity and unlimitedness.
The cool part about this is that this giving away applies to everything in your life that you want to multiply, love, money, positive thoughts and actions, stuff. All of it multiplies when you are generous and giving.