Promise

Promise (noun); a declaration or assurance that one will do a particular thing or that a particular thing will happen.

Promise (verb); assure someone that one will definitely do, give, or arrange something; undertake or declare that something will happen

People misinterpret many things.

Jack only wanted Rose to keep his promise, and Rose only wanted Jack to keep hers.

But somehow someone's promise got misinterpreted.

Theme song for this book, "My Heart Will Go On" by Celine Dion