I noticed, and im sure many others did too, that the end of season 3, ted comes home, henry comes out of the house, greets him, and michelle is at the door. Henry ushers ted in, and shortly after they are at a soccer game with henry, where michelle says " come on boys", cheering both on? Are they back together?
the actor who plays Beard confirmed that it’s supposed to be unclear, ambiguous. The point is that
Ted has become the best version of himself - as the show stated, that is the real goal, see his talk with Trent Crimm, Independent in season 1 episode 3.
He also
is back with his son. other stuff doesn’t matter.