25/50 line check v 20 Buck Spin

[Cumulonimbus]

I'm new to 25/50 and I think he knows that cuz he's rarely folded when i open, and has checkraised me at least twice since I sat for the last 20 hands or so and I folded both. He's been very loose and aggressive, but I'm not sure if he's running hot or playing good or both cuz he hasn't been showing down much. I do know he raised K3o from the CO and bluffed a JT6 board into two players.
$25/$50 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

BB: $25,110
UTG: $5,448
Hero (CO): $5,496
BTN: $3,115
SB: $8,288

Pre-Flop: A[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/diamond.gif[/img] dealt to Hero (CO)
UTG folds, <font color="red">Hero raises to $150</font>, 2 folds, BB calls $100

Flop: ($325) 2[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $200</font>, <font color="red">BB raises to $650</font>, Hero calls $450

Turn: ($1,625) Q[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $1,000</font>, <font color="red">BB raises to $24,310 and is All-In</font>, Hero calls $3,696 and is All-In