Suggest you test again. With respect the most common thing I've seen for this kind of thing is folks thinking they know what a wire is or does and being wrong. Please tell us how you know the following are in fact what you think they are. 1) The "hot" line is in fact hot at all times. 2) What you believe is a neutral has 0 resistance between itself and ground.

  @dafish 

 

Ohm meter is how I checked

Removing all wires from each other and testing 1 by 1 and only a single one has voltage... I could be wrong but I'm sure that's the hot wire

 

This answered both of your questions, if you have additional questions please feel free to ask. 

  @DDON 

 

Can also provide pictures if you think it'll help 

Pictures can't hurt, but lets see what happens for a moment:

1. Let's assume for a moment you used an AC voltmeter to test voltage to ground, and that on one wire you found 120V.
   1. Have you placed a label on that wire yet, and if so what does it say?
2. Please confirm this is a 2-way (that is only 1 switch) switch.
3. You need neutral. How have you tested for that, and how has it been labeled?
4. You need to know the load wire (the light). It would have been the other wire (the one without power) that was on the 2 pole switch.   Are you certain you know what that is, and how has it been labeled?
5. Please confirm the old switch had only 2 wires going to it.

 

I'll try to check back, let us know.