NPC Dialog Logic Firing Even when Completed?

I'm making an NPC dialog system for my game that display's the NPC's name, dialog, and confirmation arrow when you click on their model. I have it just about about working, but a strange problem I'm running into is that if you talk to the NPC more than once, it starts running again even though it should be finished. Here's a screenshot of the output (currently I have it printing the Dialog followed by the value of currentPage.

Notice how at some points, it doesn't even print the dialog, it just prints straight to the next iteration of currentPage. I'm having a brain fart and can't quite track down the logic responsible for this.

As a side note just in case, you click on the "next" button to get to the next page dialog, not the NPC itself.

Code below:

local db = 0
local dee = script.Parent.Parent
local npcName = "Dee"

local currentPage = 0

local dialog = {"Did you hear? Someone took the owner of Rocky Bay's statue.",
	"Everyone has been saying it was a squid. But what would a squid want with a statue?"
}

function clicked(player)
	if db == 1 then return end
	db = 1
	local gui = player.PlayerGui.NPCD
	local speech = gui.sBox
	local id = gui.name.n
	local close = gui.Close
	local n = gui.next
	
	id.Text = npcName
	
	local function enableNext()
		n.Visible = true
	end
	
	local function disableNext()
		n.Visible = false
	end
	
	local function makeVisible() --MAKE THE DIALOG BOX VISIBLE
		for i, v in pairs(gui:GetChildren()) do
				v.Visible = true
		end
	end
	
	local function makeInvisible() --MAKE THE DIALOG BOX INVISIBLE
		for i, v in pairs(gui:GetChildren()) do
			v.Visible = false
		end
	end
	
	local function talk()
		disableNext()
		speech.s.Text = ""
		print(dialog[currentPage])
		for x = 1, string.len(dialog[currentPage]) do
			speech.s.Text = speech.s.Text .. dialog[currentPage].sub(dialog[currentPage],x,x)
			wait(0.01)
		end
			enableNext()
	end
	
	local function nextPage()
		print(currentPage)
		if currentPage ~= #dialog then
			currentPage = currentPage + 1
			talk()
		else
			makeInvisible()
			currentPage = 1
			disableNext()
			db = 0
		end
	end
	n.MouseButton1Down:connect(nextPage)
	
	makeVisible()
	currentPage = 1
	talk()
end
dee.click.MouseClick:connect(clicked)

Any help is appreciated, thank you!!

Update: Was able to fix it.

local function nextPage()
		print(currentPage)
		if speech.Visible == false then return end
		if currentPage < #dialog then
			currentPage = currentPage + 1
			talk()
		else
			print(currentPage, "is greater than or equal to", #dialog)
			makeInvisible()
			currentPage = 1
			disableNext()
			db = 0
			script.Disabled = true
			wait(1)
			script.Disabled = false
		end

For some reason the script kept looping through itself, so I disabled the script once it was done executing the functions and then re-enabled it.