Some hard choices

Good evening.

I am playing on 1/2 party begginers right now, started not a long ago.
Got an interesting situation few minutes ago, if it's easy and boring -- then don't mind me, i am new to this game.
I joined this table not a long time ago so i only have stats for sb and co. SB is a little bit loose but i have only 15 hands for him, CO is 47/24/2/128.
How should i play this hand?



Party Poker 1/2 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with A[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/heart.gif[/img].
2 folds</font>, MP1 calls, MP2 calls, 1 fold</font>, CO raises</font>, 1 fold</font>, SB calls, Hero calls, MP1 calls, MP2 calls.

Flop: (10 SB) 5[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img] (5 players)</font>
SB checks, Hero bets</font>, MP1 calls, MP2 calls, CO calls, SB calls.

Turn: (7.50 BB) A[img]/images/graemlins/diamond.gif[/img] (5 players)</font>
SB checks, Hero bets</font>, MP1 raises</font>, MP2 folds, CO calls, SB calls, Hero calls.

River: (15.50 BB) 2[img]/images/graemlins/heart.gif[/img] (4 players)</font>
SB checks, Hero checks, MP1 bets</font>, CO raises</font>, SB 3-bets</font>, Hero folds, MP1 folds, CO calls.

Final Pot: 22.50 BB