Crazy plays from villain

First of all strange bet sizing caught my eye but decided to call.

This 2bb donkey bet makes me think he has either AA or some kind of strange draw maybe? I decide to not care about it and bet normally

Again with the 2BB raise? Again i disregard it and decide to keep betting, Now i also have the nut flush draw

This looks like a value bet, but with what hes doing can he really be following a real plan ? Maybe he has A 10 ? I feel pretty lost here, but i basically decided to take not to fold line, had he bet big, i think i would have been inclined to fold.

Have you seen stuff like this before?

PokerStars - $0.05 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

Hero (BTN): 124.4 BB
SB: 143 BB (VPIP: 14.29, PFR: 14.29, 3Bet Preflop: 0.00, Hands: 7)
BB: 298.4 BB (VPIP: 24.53, PFR: 16.98, 3Bet Preflop: 3.57, Hands: 55)
UTG: 99.8 BB (VPIP: 66.67, PFR: 33.33, 3Bet Preflop: 0.00, Hands: 3)
MP: 107.4 BB (VPIP: 40.00, PFR: 30.00, 3Bet Preflop: 0.00, Hands: 10)
CO: 105.8 BB (VPIP: 30.43, PFR: 26.09, 3Bet Preflop: 0.00, Hands: 23)

SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has Q♥ A♥

UTG raises to 4 BB, fold, fold, Hero calls 4 BB, fold, fold

Flop: (9.4 BB, 2 players) J♣ T♥ A♦
UTG bets 2 BB, Hero raises to 9 BB, UTG calls 7 BB

Turn: (27.4 BB, 2 players) 9♥
UTG bets 2 BB, Hero raises to 17 BB, UTG calls 15 BB

River: (61.4 BB, 2 players) T♠
UTG bets 26 BB, Hero calls 26 BB