Why is this the only this execution script repeating the :Fire() constantly?

I've created a script that commands a dialog box to appear and show text. It works fine, but when it's executed by this portion of the script, the dialog portion keeps repeating.

Basically, when a portion of the script says {"Bluh.","Bluh..."}, the dialog recieves it, but somehow, it repeats itself around the

	player.PlayerGui.Bar.Dialog.Changed:connect(function()
		if player.PlayerGui.Bar.Dialog.Visible == false then
			player.PlayerGui.Bar.HP.Meter:TweenSize(UDim2.new(1,0,1,0), "Out", "Quad", 0.5,false)
			player.PlayerGui.Bar.Dialog.Talk:Fire({"There you go!","When your health hits to zero,","it means you've been defeated!"},"Nothing",1.3)
				player.PlayerGui.Bar.Dialog.Changed:connect(function()
					if player.PlayerGui.Bar.Dialog.Visible == false then				
						script.Parent.PlayerTurn.Disabled = false	
						script.Parent.Turn.Value = true	
					
					end
				end)
		end

part.

Execution script:

script.Parent.Loss.Event:connect(function() -- If the player loses in the tutorial
	local pl = script.Parent.PlayerInIt.Value
	local player = game.Players:FindFirstChild(pl)
	player.PlayerGui.Bar.Dialog.Talk:Fire({"Oh no!","Your health bar has been emptied!"},"Nothing",1.3)
	
	player.PlayerGui.Bar.Dialog.Changed:connect(function()
		if player.PlayerGui.Bar.Dialog.Visible == false then
			player.PlayerGui.Bar.HP.Meter:TweenSize(UDim2.new(1,0,1,0), "Out", "Quad", 0.5,false)
			player.PlayerGui.Bar.Dialog.Talk:Fire({"There you go!","When your health hits to zero,","it means you've been defeated!"},"Nothing",1.3)
				player.PlayerGui.Bar.Dialog.Changed:connect(function()
					if player.PlayerGui.Bar.Dialog.Visible == false then				
						script.Parent.PlayerTurn.Disabled = false	
						script.Parent.Turn.Value = true	
					
					end
				end)
		end

	end)
end)

Dialog script

else if text[2] ~= nil then
	
	script.Parent.Sound.Pitch = pitch
	local text_length = string.len(text[index])
	local text_instance = script.Parent.Health
	player.Character.Humanoid.WalkSpeed = 0
	
	for i = 1, text_length do
		if i > text_length then break end
		text_instance.Text = (string.sub(text[index],1,i))
		textvalue = textvalue+1
		script.Parent.Sound:Play()
		wait(0.025)
		
	end
	
	script.Parent.Next.Visible = true
	
	index = index+1
	
	script.Parent.Next.MouseButton1Click:connect(function()
		
	
		local db = true
		text_length2 = string.len(text[index])
		text_instance2 = script.Parent.Health
		
	script.Parent.Next.Visible = false	
		
	
	
	if db == true then
		
		
		db = false
		print(text[index])
		for i = 1, text_length2 do
		if i > text_length2 then break end
		text_instance2.Text = (string.sub(text[index],1,i))
		textvalue = textvalue+1
		script.Parent.Sound:Play()
		wait(0.025)
		end
		end
	
		index = index+1
		script.Parent.Next.Visible = true
			
		
		db = true
		
		if text[index] == nil then
			script.Parent.Next.Visible = false
			script.Parent.Exit.Visible = true
			script.Parent.Parent.Parent.Parent.Character.Humanoid.WalkSpeed = 15
		end
		

	end)
	end