Answer:
What stays the same size no matter how much they weight?
Three little letters. A paradox to some. The worse that it is, the better it becomes.
What can be swallowed, but can swallow you?
Break it and it is better, immediately set and harder to break again.
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?