QB Jay Cutler proposed to Kristin Cavallari   by sending her ring in the mail. She tells E!, "It was so silly. I was   in the airport, leaving Chicago. We had just spent however many days together   and we were texting and somehow it came up, like, 'Oh, shall we get married?'   We're like, 'Yeah, OK.' And then he sent my ring in the mail. So I actually   had my ring sitting at home for a couple of weeks before I put it on."