You need to tell us what range you put him on, what kind of player he is, etc.
Check out this live hand template:
http://forumserver.twoplustwo.com/17...mplate-770217/
Generally speaking, multi-street bluffs are bad in $1/2 unless you have a very good read on the villain. When he pots and then calls your raise on a paired flop, I usually would not fire the second bullet. Hearts are unlikely here, and a strong ten or better is rarely folding on this board.