I have a general rule that if I raise with a small pair, Im not folding a set because it so hidden, but I made an exception here.
Its very easy for the guy to have 88, 99 or TT. He could also have a straight. My best guess was
![The Queen of Hearts [Qh]](https://www.pofex.com/images/smilies/Qh.gif)
He can beat T9 or 98 but thats about it (other than something like AT but I would have to see at least 2 hands where he made a play like this, with these deep stacks before I could put him on AT).
I fold and curse the poker gods.