I am so sorry this happened to you! When you calm down enough to feel Like you can approach this you should most definitely confront him and tell him how it hurt you. This should never happen but I hope you guys can work through it. Your voice commands respect no matter what, and as a father of a child with a beautiful stutter I know your words matter and should be regarded with patience and kindness. Stay strong, your reaction was completely valid and don’t let anyone tell you otherwise.