The genus name, Peperomia, is a combination of the Greek words meaning “resembling pepper” – peperi homoios.
As with most houseplants, you should be more concerned about overwatering Peperomia Cupid than under watering. Let the soil dry fairly thoroughly and then provide a deep watering.
Allow water to run through the drainage holes, and do not allow the plant to sit in water.
Reduce watering during the winter months. Only water when the leaves begin to look a bit droopy.
These tropical plants do like a humid environment. During warm weather, mist daily and set your plants on a tray of pebbles with a bit of water at the bottom.