I want to clarify, this isn’t “my scenario”, it’s a non-mathematical explanation of what we actually observe right now. When we measure the speed of galaxies far away from us, they’re receding at faster then the speed of light. You have to keep in mind that we are not talking about movement “within” the universe, where stars and matter don’t move anywhere near the speeds of light, we’re talking about reality itself expanding in all directions. We can actually observe the light emitted from those distant galaxies change its color, as the expansion of space causes the actually wavelength of light to expand.

Imagine you have a balloon, and you have a bunch of dots on it. Things can travel along the surface of the balloon up to a certain speed in any direction. You can define the balloon based on where all the dots are and the surface in between them. However, if someone starts inflating the balloon, then everything is going to spread out and the surface is going to stretch. Since the expansion of the balloon isn’t travel along the surface of the balloon, it’s not subject to the same speed limit, so your dots can move away from each other faster then things can travel along the surface if the balloon.