C# Automatic deep copy of struct

I have a struct, MyStruct, that has a private member private bool[] boolArray; and a method ChangeBoolValue(int index, bool Value).

I have a class, MyClass, that has a field public MyStruct bools { get; private set; }

When I create a new MyStruct object from an existing one, and then apply method ChangeBoolValue(), the bool array in both objects is changed, because the reference, not what was referred to, was copied to the new object. E.g:

MyStruct A = new MyStruct();
MyStruct B = A;  //Copy of A made
B.ChangeBoolValue(0,true);
//Now A.BoolArr[0] == B.BoolArr[0] == true

Is there a way of forcing a copy to implement a deeper copy, or is there a way to implement this that will not have the same issue?

I had specifically made MyStruct a struct because it was value type, and I did not want references propagating.