did i play this hand wrong in p0825? thoughts?

I potted nut low on turn, and got counterfeited, he had a nut flush draw. Should I stop betting pot on lows in these circumstances? Any thoughts? I thought his pot bet was crazy.

Table Table 67035 (Real Money)
Seat 3 is the button
Total number of players : 10
Seat 1: LeeLay ( $50.30 )
Seat 2: JACKFISHES ( $76.75 )
Seat 3: Rexbriark ( $93.29 )
Seat 4: Yeahman ( $6.30 )
Seat 6: Glik1526 ( $54.80 )
Seat 7: mmike444 ( $76.76 )
Seat 9: adsj1951 ( $36.87 )
Seat 10: Jackpotslim ( $157.40 )
Seat 5: hero ( $52 )
Seat 8: BadbeatPhil ( $51.55 )
Yeahman posts small blind [$0.25].
hero posts big blind [$0.50].
** Dealing down cards **
Dealt to hero [ 2c Ad 8s 6h ]
Glik1526 folds.
mmike444 folds.
BadbeatPhil calls [$0.50].
adsj1951 calls [$0.50].
LeeLay folds.
JACKFISHES folds.
Rexbriark raises [$1].
Yeahman calls [$0.75].
hero calls [$0.50].
>You have options at Table 66590 Table!.
BadbeatPhil calls [$0.50].
adsj1951 calls [$0.50].
** Dealing Flop ** [ 3c, Kc, 4d ]
Yeahman checks.
hero checks.
BadbeatPhil bets [$4.75].
>You have options at Table 66590 Table!.
adsj1951 folds.
Rexbriark calls [$4.75].
Yeahman folds.
hero calls [$4.75].
** Dealing Turn ** [ 8d ]
hero bets [$18.30].
BadbeatPhil is all-In [$45.80]
Rexbriark folds.
hero calls [$27.50].
** Dealing River ** [ 2h ]
hero shows [ 2c, Ad, 8s, 6h ] two pairs, eights and twos.
hero shows 6,4,3,2,A for low.
BadbeatPhil shows [ Ks, Kd, 5d, As ] a straight, ace to five.
BadbeatPhil shows 5,4,3,2,A for low.
BadbeatPhil wins $53.93 from the main pot with a straight, ace to five.
BadbeatPhil wins Lo ($53.92) from the main pot with 5,4,3,2,A.