I think I’m going to like the newest Dallas Star. This Sean Avery kid has moxie. He’s a newsmaker. A gossip generator. A swain unafraid, apparently, to tread where Calvin Klein has gone before. Comes news in Page Six this morning that Avery, 28, is dating Klein’s ex, Kelly Klein, who is 23 years his senior. My only fear is that Dallas isn’t going to offer Avery the diversions he’s grown accustomed to in NYC. He’ll be in town next week to throw out the first pitch in a Rangers-Yankees game. Ladies — and upscale fashion boutiques — take note.