Trust the good old "love letter" way to tell your partner how much you love them! This might sound clichéd, but is the most difficult one, trust us. Talk about why you are upset or what you don’t like, or what you expect. Write about things you would like to work on. At the same time, stress on how happy you are with them. Remember to be fun and romantic. Stay away from the blame game here. A handwritten letter always feels coming from the heart, and is more touching.