NL 10 SH - TPTK flushboard

Ongame Network $10.00 No Limit Hold'em - 6 players - View hand 1703900
DeucesCracked Poker Videos Hand History Converter

BTN: $9.85 - VPIP: 19, PFR: 14, 3B: 7, AF: 2.3, Hands: 73
SB: $6.34 - VPIP: 15, PFR: 13, 3B: 3, AF: 5.4, Hands: 662
BB: $15.58 - VPIP: 62, PFR: 2, 3B: 0, AF: 2.0, Hands: 45
UTG: $6.00 - VPIP: 12, PFR: 5, 3B: 0, AF: 1.0, Hands: 189
MP: $6.39 - VPIP: 19, PFR: 12, 3B: 0, AF: 5.0, Hands: 42
Hero (CO): $12.09 - VPIP: 22, PFR: 18, 3B: 6, AF: 2.5, Hands: 72964

Pre Flop: ($0.15) Hero is CO with T A
2 folds, Hero raises to $0.35, 2 folds, BB calls $0.25

Flop: ($0.75) T 7 6 (2 players)
BB checks, Hero bets $0.55, BB calls $0.55

Turn: ($1.85) 6 (2 players)
BB checks, Hero bets $0.95, BB calls $0.95

River: ($3.75) 3 (2 players)
BB bets $3.75, Hero calls $3.75

I think my play is fine here, but I am unsure about the call on the river. My reasoning for calling is that I did not expect villain to play his hand like that if he had made a flush other than the nut flush. And the big donk bet just screams desperate busted draw.