Recruit a World Champion

Su Jinran and her "ex-boyfriend Jiang Lin" broke up through fraud. Four years later, she received a bonus of 2 million, only to find out that it was just a misunderstanding. She wanted to work hard for true love, but found out that her ex-boyfriend was the son of the richest man. She struggled for six years to stand in front of her ex-boyfriend and confirm whether she still loves me. But in exchange, my ex-boyfriend said, "I'm getting engaged. I thought I would never be in love again in this life, but I didn't expect that this little brother Jiang Ye has a nice voice, is gentle and considerate, and the most important thing is that he has the same three views. Being handsome is the most inconspicuous advantage. Just work hard and God will freely arrange it!" Guess what is the relationship between Jiang Lin and Jiang Ye?