Tristan Thompson, 29, made the move to the east coast earlier this month to start his career with the Boston Celtics and on December 15 his on-again girlfriend Khloe Kardashian, 36, joined him. Although the Keeping Up With the Kardashians star isn’t planning to make the move permanently, she will be spending plenty of time in the city, and sources tell HollywoodLife EXCLUSIVELY that Tristan feels “lucky” to have her with him on his new journey.