Got lucky on a raise or correct play?

[irishpint]

just sat down. im betting the flop and turn since i have my pair and OESD. The ten hit on the river and i didnt know what to think, did he have a ten? why was he still in the hand? so i raised him, he called the raise. he had nothing. but was it a dumb move to raise him there? i had been showing agression the whole time. would u raise 55 from my position to try and steal the button?

Party Poker 0.5/1 Hold'em (10 handed) converter

Preflop: Hero is CO with 5[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img].
UTG calls, <font color="#666666">4 folds</font>, MP3 calls, Hero calls, <font color="#666666">2 folds</font>, BB checks.

Flop: (4.50 SB) 6[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, UTG checks, MP3 checks, <font color="#CC3333">Hero bets</font>, BB calls, UTG calls, MP3 calls.

Turn: (4.25 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, UTG checks, MP3 checks, <font color="#CC3333">Hero bets</font>, BB folds, UTG calls, MP3 folds.

River: (6.25 BB) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, UTG calls.

Final Pot: 10.25 BB