Who has the key to your heart? Show it off in a fun and unique way with our Heart and Key Keychain for Couples. This set of personalized keychains comes with a key keychain and a heart keychain with a key cut out. The symbolism of these couples keychains is very strong. And to make this keychain even more special, not only can you engrave any name you want on it, but you can also select a birthstone crystal to add an additional accent! Couples keychains are very popular and you know you want to get this set!