It means that he has no clue about personal boundaries. No one should be touching you without your permission. Even if you were to give permission, I'd be hesitate about someone touching me around my face. That's way too personal a touch for a coworker to be making, IMO. A simple - please don't touch me like that - should take care of it.
It means he is a jerk.
It is an act of flirtation! He is playing with your feelings. By all means, avoid being isolated with the individual. In your work environment limit the nature of your conversation with him. It may even be necessary to terminate if possible all contact with the him. Thereafter, strict self-control must be applied regarding your eyes, thoughts, feelings, and behavior toward him. Be careful! Stay safe.
He likes you but he's too old for you.
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