It looks to me like the woman was mass producing "love" and because it was full of feelings that weren't genuine (possibly with negative emotions from the donor?) they could only be temporary, leaving that person with the whole loved-and-lost deal
I'm allergic to dairy, and when people ask "how do you live without any dairy products in your life?", I always respond with "It's better to never have experienced something than to experience it and miss it." This oneshot is just this idea but taken to an extreme.