SAY I DO: Now that you and your honey have gotten serious and he’s been dropping the “m” word a lot more these days, It’s time to help him pop the question with the right ring. Thanks to Tiffany & Co’s iPhone app, shopping for engagement rings is a cinch. The application includes an accurate ring sizer and lets you browse through shape, setting, metal and design using six different carat sizes. Plus, you can save and share your favorites via email, text message, Facebook and Twitter. How’s that for dropping the hint? GET IT: www.apple.com.