How do I make this part face the camera properly?

I used the physics springs(hookes law) to give my part an effect, so that that when the players camera turns, the part faces the camera but goes out and back in the camera offset.

local spring = {}

function spring.new(position, velocity, target)
    local self = setmetatable({}, {__index = spring})

    self.position = position
    self.velocity = velocity
    self.target = target
    self.k = 1
    self.d = 1

    return self
end

function spring:update()
    local x = self.target - self.position
    local f = x * self.k
    self.velocity = (self.velocity * (1 - self.d)) + f
    self.position = self.position + self.velocity
end

Ok, so the position is the parts location, and the target is the parts target(ignore velocity)

but, when I apply this to the part though, the part doesn't face the camera properly

local Offset = CFrame.new(-.5, -.25, 1.25)

local springee = spring.new(testPart.CFrame.p, Vector3.new(), Offset + Camera.CFrame.p + Camera.CFrame.lookVector)
springee.k = .1
springee.d = .25

game:GetService("RunService").RenderStepped:connect(function()
    testPart.LocalTransparencyModifier = 0
    springee.target = Camera.CFrame.p + Vector3.new(Camera.CFrame.lookVector.X, Camera.CFrame.lookVector.Y, 0)
    springee:update()

    testPart.CFrame = CFrame.new(springee.position.X, springee.position.Y, Camera.CFrame.z) * Offset
end)

It's supposed to look at the cameras direction, but instead it just looks at one direction.

If you know how to fix this then please answer, I couldn't find any solution to this.