Lea Michele was spotted at LAX Sunday wearing a diamond bauble on her ring finger. While there was speculation that Cory Monteith may have proposed to Michele before his fatal drug overdose this summer, a source tells E! News that the sparkler definitely didn't come from him. Michele was returning from a weekend in San Francisco with pals Jonathan Groff and Skylar Astin. In 2006, the three of them starred together on Broadway in Spring Awakening. Online, Michele wrote after the getaway, "Back from an amazing weekend in SF with these boys! So grateful for such amazing friends."