Thoughts on all streets appreciated.
Hero - Late 20s white guy. Table started about an hour ago and Hero has been playing 1-2 hands per orbit. Hasn't shown down a hand yet. $270 behind
Villain - Mid 30s white guy with ear buds in. Likes to limp/call but i've also seen him play hands aggressively (i.e. All In preflop for ~$400 from the big blind after a Hijack Raise and a SB call). I've also seen him lay down TPTK once.
On to the hand:
1/2 NL
Hero is UTG+2 and opens for $15 with A
K
Folds to V on the button who calls. Blinds Fold.
Pot $30 Flop: A
9
9
Hero bets $25. Villain pauses for a 1 Mississippi count and Calls.
Pot $80 Turn: K
Hero bets $50. Villain pauses for a 1 Mississippi count and calls.
Pot $180 River: 7
Hero?