I Believe It's True!Why I say this. When the law of physics was discovered it had already existed.
It is a thing you can feel and I do not feel physical attraction and lust is the same thing.
I have felt physical attraction in many different ways
For an example you are sitting somewhere waiting to be seen.
Someone comes in and sit down all of a sudden a conversation starts.
If that was lust I would probably be more attracted to their looks and strike the conversation.
I believe everyone experience physical attraction. I do believe it is harmless it can just be a unique thing within a person that when you come in contact it sort of connects like a magnetic force.
It not necessarily means you will go any further it could be just a one-time thing or just a brief encounter.