Things we see in Crisis Core that show Zack’s love for Cloud.
1: Zack dying to protect Cloud.
2: Zack protecting comatose Cloud for over a year.
3: Zack constantly encouraging Cloud .
Things we aren’t shown but defiantly happened.
1: Zack having to wash and change Cloud over the course of the year.
2: Zack cutting Cloud’s hair the way he likes it.
3: Zack feeding Cloud three meals a day, sometimes having to forgo a meal himself because he couldn’t get enough food.
4: Zack Having to massage and exercise Clouds muscles to prevent Atrophy.
5: Zack having to help Cloud go to the toilet.
6: Zack having to make sure Cloud is protected from the elements whilst they sleep.
7: Zack crying because he misses Clouds voice, and because he isn’t sure that Cloud will ever be the same again.
"Don't pretend you're sad. Why tremble with anger that's not even there? Face it, Cloud; all you are is an empty puppet."