:)

So here's my problem.
There is this guy I have known for a long time and he's nice. I mean he's nice. He has had a crush on me for the longest time. I have rejected him 3 times. Since then he has still tried to get out of the friend zone box. He said to one of his friends if I dated him I would solve 99 percent of his problems and I was right there so I said I will make you 99 more problems. After that he still hasn't given up. He left for a trip and now he is back from it. I don't want him to think I am a jerk. So what should I say to him?