HU 50-100 Private Game...facing River Push

[SMiLEsCRiES]

I got to the game late and only 1 remaining player. Decided to play HU. 15k effective stacks. Hand was played in the 1st 20 min of play.

Villain and I have an extended history dating back years. Villain would be best described as an extreme LAG, but very smart and experienced player knowing what he's doing. He applies constant pressure at all opportunities.

50/100

I'm in BB with Q9 off. He raises to $300.....I 3-bet to $1300....he calls .

Flop is 2d, 3s, Qd... I check. Villain bets $1400. I call.

Turn is 5d. I check. Villain checks behind.

River is 10c. I bet $2000. Villain pushes.

Any feedback on this hand would be greatly appreciated. I have been thinking about this and all day.