2/5 Saturday afternoon. Effective stacks of ~$900.
Villain is late 20s/early 30s, muscular build. Seems to be a semi-regular (I've seen him in the room before and he knew at least one other player at the table). My general reads on him were that he was on the tight side and on the aggressive side (rather than passive/station-y), but neither to the extreme. He had 3-bet maybe 5-6 times total in about 4 hours of play, so not excessive, but not like he never does it either.
We have one hand of history, as follows:
*HISTORY HAND (note: not including hero's hand as I never showed so villain wouldn't have this info)*
Pre-flop: Effective stacks $700. Hero is HJ and makes it $30 with 2 limpers behind. Folds to villain in BB, who makes it $80. Hero calls.
Flop ($170): 8

5

3

Villain checks, hero checks.
Turn ($170): 2

Villain bets $115, hero calls
River ($400): J

Villain checks, hero bets $235, villain calls
Hero says "one pair" and villain flips AA and scoops pot.
*HAND IN QUESTION*
Pre-flop: Effective stacks $900. Hero is HJ with 22 and makes it $35 after 4 limpers behind. Folds to villain in BB, who says "35 . . . are you stealing?" and makes it $75. Hero calls.
Flop ($170): J

9

2

Villain bets $125, hero calls.
Turn ($420): 3

Villain bets $300, hero shoves $400 more
Thoughts on all streets appreciated. Thanks.