I call the river just because you don't want other players to start doing tricky plays against you on the river thinking you can fold a hand. It's just asking them to play better against you and try and bluff you out of hands since they know you can lay down a good hand. And I wouldn't have said anything to him, its not a hand reading contest its a poker game, don't let your oppoenent's know anything they don't have to.

i like your preflop reraise as well.