Answer:
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
When there is fire in me then I am still cold. When I own your true love’s face then you will not see me. To all things I give no more than I am given. In time I may have all things, and yet I can keep nothing.
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
I run around the city, but I never move.
Do you know what you can hold without ever touching it?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?