You and him, You and her, You and your bestie. Who am I with?
Flip flop or "sandal jepit" in Indonesian is a very simple and comfortable type of sandal to wear in daily activities. Many people who wear these flip flops make us often confuse flip flops with others people.
In Indonesia, the owners often write their names on their sandals to avoid getting confused with other people's flip-flops.
What's the connection with love? nothing, just mark people you care about to make your life easier and more comfortable as a partner/couple.