floped 2pairs but facing aggression by villian!

[DonEdison]

no reads on villian! its his 3rd hand...

i know some will say its a def preflop falled but what is your play getting miniraised with 2 pairs? is this a horrable preflop play if image is tight? opinions!

Everest Poker No-Limit Hold'em, $0.15/$0.25 (HH Converter by Kreatief)

CO (18.05)
Button (29.05)
SB (26.30)
BB (31.95)
MP2 (40.30)
MP3 (14.35)

Preflop: Hero is CO with 3[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img]
<font color="#666666">1 folds</font>, MP3 calls $0.25, <font color="#CC3333">Hero raises to $1.15</font>, <font color="#CC3333">Button raises to $2.05</font>, <font color="#666666">3 folds</font>, Hero calls $0.90,

Flop: 5[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] ( $4.75 )
<font color="#CC3333">Hero bets $3.00</font>, <font color="#CC3333">Button raises to $6.00</font>, hero???