Text enter in one text box gets populated in another

Here is a part of my html code for angularjs app

<input type="text" class="input-xlarge" id="user_name" ng-model="myModel.text" 
       name="user_name" rel="popover" data-content="Enter your first and last name."
       data-original-title="Full Name">

<input type="text" class="input-xlarge" id="user_email" ng-model="myModel.text"
        name="user_email" rel="popover" data-content="What’s your email address?" 
        data-original-title="Email">

Here is my controller code

    function MyCtrl2($scope) {
         var initial = {text1: 'initial value'};
         var ini = {text2: 'initialvalue'};
         $scope.myModel = angular.copy(initial);
         $scope.myModel = angular.copy(ini);
}

MyCtrl2.$inject = ['$scope'];

What ever I write in first text box automatically gets populated in second text box too.

Why is dat happening.

How to avoid it.