How Can I Make Things Right?

A new boy joined our school, he is asbergic like me but much worse, everyone thought he was weird and I felt pressured into going along with what they said but I found out he was a nice guy so I gave him a chance, he then started to really like me like a best mate but he would do things like put his spread out across my face (I have no Idea why) and because I’m chlostraphobic it scared me to the point where one day I ended up punching him in the arm, he then stopped but then he started to prod my head or nose and told me to ‘growl like Lucy’ (because when he did it to lucy 1 time she growled as a joke) I didnt like what he was doing so I started to dislike him slightly, but then I had a word with him and he stopped, I stuck up for him when my m8s Lucy and Danni Complained about him (at that point they didnt really like him because he was annoying and creepy) and I started talking to him on msn, one time I asked him if he had seen anyone he fancied yet and he told me that he had but was nervous because he had never been in a relationship or even kissed a girl before so I offered to help him, he rund me one time whilst I was umm masturbating Embarrased and I accidently pushed accept instead of reject and he heard after about 10seconds I realised and dissconected, he then sent me a message and asked if it was me? I didnt lie because I dont believe in lying so I said ‘yes, sorry I really didnt mean to accept’ and then he asked me to do it again because he liked it but I declined because I dont like him in that way, he then started sending me flirty and Dirty messages and Then he confessed that he loved me and told me he dreamt a romantic dream where he kissed me, I was so embarresed and flattered but I told him I didnt feel the same, he started staring at me in music class and was daydreaming about me and he did it more and more no matter how many times I told him I wasnt interested, in then end I I got so desperet to make him stop I ended up being nasty to him but even then he kept convincing himself I didnt mean it and still didnt stop! So I did something quite Mean, I sent some flirty messages back to him to make it seem like I was interested then after a week I told him I wasnt interested and he became heartbroken, I appologised and said ‘I tried everything to make you stop but you just wouldnt’ and that it was the last thing I wanted to do and I regret it but he hated me, I tried everything to make it up to him but it didnt work, I recently asked his forgiveness again and in the end he said that we could start over but I had to be patient but then he just went back to being nasty. 2 weeks ago me, lucy & danni formed a band with Him and his mate lewis but now he’s kicked me out and says he doesnt even remeber inviting me, I’m quite upset because me, lucy and danni have always dreamed about being in a band together and that was the only time I got to spend with them outside of school. How can I get this guy to forgive me? please dont critisize me, I am very sorry for my actions but I really was desperate for him to stop because he was getting very obssesive and possesive. :( sorry this was long and thanks a lot for reading.