99 UTG (I stink at hand-reading)

[tpir]

2/4 NL, I am UTG ($450) and make it $15 with 99. UTG+1 ($360) calls (he seems to be slightly on the active side, he 3-bet all-in for a stack on a 4-handed flop with the nut FD earlier when I had a small set), everyone else folds.

Flop ($36): 432r
I bet $30, villain raises to $70, I call.

Turn ($176): 6
I check, villain bets $100, ??

Is folding here weak-tight? I seriously have no idea how to read hands HU when people can have such wide ranges.