I don't really have a problem with this bet. Your bet is only a pot sized one after all. If you are called, I think you are usually beat here, althought you may be getting action from AQ or KK. You do have outs to the heart though. You HAVE to bet something on the turn, and it's not like you're folding to a reraise anyway. You may even be getting action from a hand like KQ, with the K of hearts.

GH