no good reads. villain is 44/16 after 25 hands and his river bet was almost instant.
I have a nitty/tag image. Line check?

Ultimate Bet
No Limit Holdem Ring game
Blinds: $0.50./$1.
6 players
Converter

Stack sizes:
UTG: $109.80
UTG+1: $99
CO: $99.45
Button: $61.35
Hero: $184.40
BB: $165.80

Pre-flop: (6 players) Hero is SB with A A
UTG folds, UTG+1 calls, CO folds, Button calls, Hero raises to $5, BB calls, 2 folds.

Flop: T T 8 ($12, 2 players)
Hero bets $8, BB calls.

Turn: 5 ($28, 2 players)
Hero checks, BB bets $28, Hero calls.

River: 7 ($84, 2 players)
Hero checks, BB bets $84, Hero folds.
Uncalled bets: $84 returned to BB.

Results:
Final pot: $84