Reblogged By: De De Tillman;  Celebrity Blogger Source: People.Com Posted: Friday October 18, 2013 @ 1:04 p.m PST     Dax Shepard and longtime love Kristen Bell have tied the knot, a source confirms to PEOPLE. The actors have been together since 2007 and have a 7-month-old daughter, Lincoln,born last March. They have always maintained they would not wed until…