A fork of Rural Dictionary
In New York terms if you say my heart it means someone you deeply care about like a brother best friend family member or a significant other
where space and time are relative / irrelevant
in my heart
"You are my heart" means that you are the most important person in the speaker's life. Without you, they would not be able to function, live, or carry on.
"You are my heart. If anything happened to you, I would not be OK. I would break."
When you want someone to believe you, when you swear something.
Please, donโt tell anybody! Of course, cross my heart