did i overplay the river?

MP1 is >50 vp$ip and aggressive.

Party Poker 0.50/1 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is UTG+2 with T[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. CO posts a blind of $0.50.
<font color="#666666">2 folds</font>, Hero calls, MP1 calls, MP2 calls, <font color="#666666">1 fold</font>, CO (poster) checks, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (6 SB) J[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB checks, Hero checks, MP1 checks, <font color="#CC3333">MP2 bets</font>, CO calls, SB calls, BB folds, Hero calls, <font color="#CC3333">MP1 raises</font>, MP2 calls, CO calls, SB calls, Hero calls.

Turn: (8 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, <font color="#CC3333">MP1 bets</font>, MP2 folds, CO calls, SB calls, Hero calls.

River: (12 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP1 raises</font>, CO folds, SB folds, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">MP1 caps</font>, Hero calls.

Final Pot: 20 BB