[4_2_it]

Push or fold are your only options. He's committed to this pot and wants you to make a decision. If villain is capable of making this play with anything other than a set, then you push. If villain is a rock, then an easy fold. Sounds like you are stuck in between these options so just go with your gut. If table image plays any part in this game then I like a push. Otherwise your CB will be getting raised until you stack somebody.