David Cassidy
The actress rushed to his side when he was hospitalized last month.
"This will be a daily reminder for me to share my gratitude with those I love," Katie Cassidy wrote.
WHAT'S HAPPENING
WHAT'S HAPPENING
"Bye bye childhood."
Cassidy's role as a heartthrob in the hit TV show "The Partridge Family" launched his career.
There have been many other teen idols since David, of course, but none as big.