Tristan Thompson openly expressed his love for on-again, off-again girlfriend Khloe Kardashian, 36, in a new Instagram comment. The Boston Celtics player was responding to a post the Keeping Up with the Kardashians star shared for his 30th birthday on Mar. 13 and didn’t hold back. “I LOVE YOU SO MUCH KOKO,” he wrote along with four red heart emojis. “let’s keep building amazing memories!!!”