Tarek El Moussa could not be happier with where he is now in his life – and that includes the newest addition to his family. In an interview with Fox News Digital, the "Flip or Flop" star shared that the birth of his son, Tristan, brings "so much joy" to his household, which includes wife Heather Rae Young and the two children he shares with ex-wife Christina Hall: Taylor and Brayden. "I honestly I mean, this is the happiest, hands down, the happiest I've ever been in my life," he said.