Try saying

 Try saying "I love you" instead of "love you."

Try saying "hello beautiful" when you answer the phone vs "do you need something".

Try saying "I miss you" instead of "miss you".

Try saying, "You should come with me" instead of "Come if you want."

Try saying, "I've made plans for us this evening," instead of "It doesn't matter to me, it's whatever you want to do." 

Sometimes it's not just the communication that is important ...... but it's how you communicate with the person you love that will make astronomical impacts in your relationship.