another thought since you are already in that position on the turn, what about a bin raise and bring it 2 $5. he will call.

3 things can happen
1) he re-raises u and you fold only loosing $5 obviously u r beat
2) he calls and then checks on the river allowing u to check and win the pot at showdown, posibly loosing to 2 pair
3) he folds thinking you have the nut flush

in these scenarios u seam to risk a little less for him to reveal his hand