Strange line and it happens 3 times

[iceman5]

$2/$4NL...6 max
All 3 of these hands I get check raised on the flop and then the guy checks the turn. I hardly ever see that and to see it 3 times in 5 mins really was weird and I was like a deer in headlights.

#1) I raise to $16 with TT. BB calls.
Pot $34. Flop 752. He checks, I bet $24 and he check raises to $48. I call.

Pot $130. Turn 9. He checks and I check
Pot $130. River Q. He bets $80 and I fold.

#2) Same villain a few hands later. He limps UTG. I raise to $16 with JJ and he calls.

Pot $38. Flop T66. He checks, I bet $30 and he check raises to $60. I call.

Pot $158. Turn 4. He checks...hmmm..same exact line. I bet $80 and he calls.

Pot $318. River 8. He bets $140. I call...Thoughts?


#3) This happened at the same time..different table and different villain.

I raise to $16 UTG with KK. BB calls.
Pot $34. Flop 862. He checks and I bet $30. He check raises to $72. I call.

Pot $176. Turn 9. He checks and I check
Pot $176. River T. He bets $40 and I raise to $120. Thoughts?