Believe me, when I say I always think of you, it means; No matter how busy my head is. It does not matter what I do. My brain is always thinking of you.
Don't be available for someone all the time, don't reply in seconds, don't write long paragraphs as reply of a short message, don't demand for pictures, don't crave for replies, this may not save your relation but at the end you're self respect remain untuched.