Was this Waaaay off or justified? [25nl]

[HotPockets]

I've been playing at this table for about 45 minutes, villain has been raising about 3 times an orbit.

PokerStars No-Limit Hold'em, $0.25 BB (7 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

UTG ($1.20)
MP1 ($19.65)
<font color="#C00000">MP2 ($23.65)</font>
CO ($8.40)
<font color="#C00000">Hero ($22.35)</font>
SB ($30.90)
BB ($25.05)

Preflop: Hero is Button with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">MP2 raises to $1</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">MP2 raises to $7</font>, Hero calls $4.

Flop: ($14.35) 3[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP2 bets $7</font>, <font color="#CC3333">Hero raises to $15.35</font>, MP2 calls $8.35.

Turn: ($45.05) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>

River: ($45.05) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: $45.05