Key to My Heart Cute Couple Keychain Just $0.85 Shipped! This post may contain affiliate links. Please see the full disclosure policy here. Posted on January 14, 2014 Written by Kristen Dann Leave a Comment With Valentine’s day around the corner, it’s time to start thinking about what to get your significant other. Amazon has a cute key to my heart couple’s keychains for just $0.85 and FREE shipping! This is adorable!