I want to say something beautiful to my gf when I reconnect with her. Please help me form a sentence that sounds natural and loving

I’d like to say something that conveys the following:

“I love you with my whole heart. My days grow long without you because I know my sunset with you by my side. I miss our quiet love.”

Can the translation include the term “Cara Mia”? She loves hearing that. I did some research on a direct translation but I wanted to say something that roles off the tongue and sounds natural.