advice :)

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 zei to one of his vrienden if I dated him I would solve 99 percent of his problems and I was right there so I zei I will make u 99 meer problems. After that he still hasn't gegeven 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?

Ok, so I have this friend who's a Freshman, like me, at my high school & everyday when I get to my lunch table, usually there's nobody there, so I go on my phone & onto YouTube to watch some videos I really like. Well, while I'm doing that, my friend Mitchell always sneaks up behind me & tasers my sides. Well, this would be ok if I wasn't extremely ticklish there! Whenever he does this, I always jump, squeal, & bring my arms down to protect my ticklish sides.

He's always done this & he enjoys it, I can see that. To be honest, I do like it when he does this, but sometimes, I don't. And usually, I'm having a crappy dag after 4th hour(Exploring Science), because there's a girl in my tafel, tabel group, Lauren, who's always snobby to me & mean. I never did anything to her to make her hate me!! So usually after that class, I'm in a bad mood. But when Mitchell tasers me, it makes me feel better. But I'm not sure what I should say to him!! Please help me out!!!