Are you in love? Have you given someone the key to your heart? If you have make sure to send them this Key to My Heart Facebook Chat Emoticon while you are talking to them on messenger. This is a great way to show that you are totally in love with them as they have unlocked the “true” and hidden you. Everyone wants someone to love them, and since you have found that special someone it is always a good thing to remind them of it by sending this romantic emoticon to them.