UTG+1 seems pretty LAG preflop but he also seems to be pretty good at it. I've seen him pass the opportunity to c-bet before so his raise here means either an overpair or a big draw (AK of hearts, for example.) SB is a bit of an idiot and we're not really afraid of him at all.
I thought about raising the SB but feared that UTG+1 would come over the top of me and price me out. When it came back around to me, I was a little unsure on how to proceed. I'm getting over 3 to 1 on my money but I'm not sure that the

or

are live. If either of those cards happen to show up on the next street, I'm could very well lose a lot more money trying to figure out if I'm beat. Not only that but $5 is a lot more than I wanted to spend on the turn card and having only invested $2 at this point I figured I could cut my losses and walk away.
Bad fold? Should I have raised the SB on the flop to see how UTG+1 responded?
PokerStars No-Limit Hold'em, $0.50 BB (9 handed)
MP3 ($50.55)
CO ($73.10)
Button ($60.45)
SB ($40.80)
BB ($52.50)
Hero ($51.10)
UTG+1 ($45.55)
MP1 ($11.30)
MP2 ($6.75)
Preflop: Hero is UTG with

,

.
Hero calls $0.50,
UTG+1 raises to $1.5,
3 folds, CO calls $1.50,
1 fold, SB calls $1.25,
1 fold, Hero calls $1.
Flop: ($6.50)

,

,
(4 players)
SB bets $0.5, Hero calls $0.50,
UTG+1 raises to $5, CO folds, SB calls $4.50, Hero folds.
Turn: ($17)
(2 players)
SB checks,
UTG+1 bets $10, SB folds.
Final Pot: $27
Results in white below:
No showdown. UTG+1 wins $27.