iPhone removing reactions on its own SMS

So recently my iPhone just starts removing reactions (heart, exclamation, etc. ) that do not even exist on its own. And it just keeps removing them. Therefore it keeps sending people with green text (SMS) messages of removal. It did it like 40 times in one minute. It also just keeps adding the message like this, getting. Longer every time: “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Removed a heart from “Sweet we just got his car seat too.””””””””””””””””””””