2nd nuts full house in a bomb pot , against agression from 1st player to act

Player seems sold so far , always acting passive on bomb pots till now .
Are we supposed to give hem credit for 77 , or call it down ?

Having the nut flush draw really makes hes bluffs much less , was really not sure about this.

PL 6 Card Omaha 10(BB)
SB ($6709.02) [VPIP: 54.8% | PFR: 30.6% | AGG: 25.3% | Flop Agg: 16.7% | Turn Agg: 35.7% | 3Bet: 25.8% | 4Bet: 66.7% | Hands: 74]
HERO ($2780.60) [VPIP: 51.3% | PFR: 29.2% | AGG: 38.8% | Flop Agg: 41% | Turn Agg: 44.4% | 3Bet: 9.8% | 4Bet: 16% | Hands: 10463]
CO ($2084.50) [VPIP: 39.3% | PFR: 21.4% | AGG: 41.9% | Flop Agg: 37.5% | Turn Agg: 60% | 3Bet: 0% | 4Bet: 0% | Hands: 32]
BTN ($4913.46) [VPIP: 39.2% | PFR: 10.1% | AGG: 15.8% | Flop Agg: 15.6% | Turn Agg: 14.3% | 3Bet: 0% | 4Bet: 0% | Hands: 87]

Dealt to Hero: A♣ T♦ 8♣ 7♥ 5♥ 3♦

Hero SPR on Flop: [7.19 effective]
Flop ($280): 3♣ 3♥ 7♣
SB Bets $210 (Rem. Stack: $6429.02), HERO Calls $210 (Rem. Stack: $2500.60), CO Folds, BTN Folds

Turn ($700): 3♣ 3♥ 7♣ 4♥
SB Bets $700 (Rem. Stack: $5729.02)