As 37, this was an intense catch!

"If you don't exist, neither do I." I often think we're all replaceable in other people's lives. However, there might be exceptions where life itself cannot continue for others if we are not with them in some way.

"Tears flowed in a stream down her cheeks as if a dam had broken. She leaned forward slowly and laid her cheek in his warm palm." Vivid image.

Great writing. Congratulations!