Binding multiple objects to a listview

Hello,

I'm trying to bind some text to a textblock, but also add in some separators to divide some sections.

Xaml:

<StackPanel
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"><TextBlock FontSize="50" Background="White"/>
<ListView  Grid.Row="2" BorderBrush="White"
Name="ListView1"
ItemsSource="{Binding Path=Line}"
HorizontalAlignment="Stretch"
FontSize="23"><ListView.ItemTemplate><DataTemplate><StackPanel><TextBlock Text= "{Binding Path = aline}"/></StackPanel> </DataTemplate></ListView.ItemTemplate></ListView ></StackPanel>

This Xaml is being loaded in during runtime, so the binding is also done in code behind.

The binding to the textblock is working as intended, but I can't seem to figure out a way to insert a separator. I've tried to Listview.Items.add(mySeparator), but I get the error message saying that the listview is in use.

I've also tried to create a new ListView, then adding in the separator, then adding in the binding, but I get an error message saying that the Items need to be cleared before binding.

Any suggestions or different paths I can take?