Removing Tabpage With MiddleClick

Code:

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Public Class Form1

    Private m_MouseCoords As Point

    Private Sub TabControl1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TabControl1.MouseClick
        If e.Button = Windows.Forms.MouseButtons.Middle Then
            If TabControl1.TabPages.Count > 0I Then
                Dim TabPageIndex As Integer = -1I
                For Counter As Integer = 0I To TabControl1.TabPages.Count - 1I
                    If TabControl1.GetTabRect(Counter).Contains(m_MouseCoords) Then
                        TabPageIndex = Counter
                    End If
                Next Counter
                If TabPageIndex > -1I Then
                    TabControl1.TabPages.RemoveAt(TabPageIndex)
                    If TabControl1.TabPages.Count > 0I Then TabControl1.SelectedIndex = 0I 'Selects the first one
                End If
            End If
        End If
    End Sub

    Private Sub TabControl1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TabControl1.MouseDown
        If e.Button = Windows.Forms.MouseButtons.Middle Then m_MouseCoords = New Point(e.X, e.Y)
    End Sub

    Private Sub TabControl1_MouseUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TabControl1.MouseUp
        m_MouseCoords = Nothing
    End Sub

End Class

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So I was tinkering with my tabpages and removing them with my middle click and I came across a problem:
Make a new form with this code and then make a tabcontrol with 8 tabs, run it and click tabpage8 then tabpage7 and then try to remove tabpage4; unfortunately it removes tabpage3. Any help is appreciated, thanks!

Anyone know?