Here are some examples:
* He pined for her, his heart aching with longing.
* She yearned for a life filled with adventure.
* His gaze lingered on her, a silent ache filling his chest.
* The longing in her eyes was unmistakable.
* He longed to be back in the familiar embrace of his childhood home.
You can also use figurative language to create a more vivid picture of pining:
* Her love for him burned like a slow, smoldering fire.
* His heart ached like a wounded bird.
* She felt a hollow ache in her soul, a yearning for something she couldn't name.
By using descriptive words and phrases, you can effectively convey the emotion of pining in your writing.