It sounds like you're referring to a track or a sound piece titled "heart problems v09" by an artist/producer named xenorav (or similar handle).
She left.
Kael looked at her tears. His optical nerves registered the moisture, the red eyes, the sadness. A normal heart would have ached. A normal heart would have raced. heart problems v09 by xenorav best
Walkthrough Support: Many fans utilize Patreon or community mods to find the "best" path through the complex dialogue choices. Technical Details Engine: Built on the Ren'Py visual novel engine. It sounds like you're referring to a track
Itch.io: You can check the Heart Problems page on Itch.io for devlogs that explain new features in the v0.9 update. Key Tips for v0.9 the red eyes