Advice on A Boy

I started talking to a guy from school (on snapchat) just before national lockdown in February 2020 and he was so sweet and everything I wanted in a guy. In April/May we had a couple tiffs where he said he only wanted friends with benefits and then changed his mind and said he wanted a relationship and and we this went back and forth all the way to September 2020 (we were very on and off and I spent a lot of time crying because of him and his actions but we never ended up meeting up in person but we were also texting quite flirtily). After April we were never the same as we were before, he stopped replying to me instantly and only engaged with me around once/twice a day unless he was horny. In September I told him I was talking to someone else and he left me alone for a month. September was also the month he moved 30 miles away for university (this didn’t really make a difference because we were only online anyway). After a month (October) I posted on my snapchat story a selfie where I was all dressed up and looked considerably nicer than I usually do. He said he was wrong and wanted a relationship with me after all. He was sweet for a couple weeks but immediately went back to leaving me on delivered for 12+ hours and it really got on my nerves. He added me to his private story, asked to be added to mine then removed me from his. In December He then left me on opened for 4 days (after I made a sarcastic joke) and in the spur of the moment I had enough and I blocked him on everything- Instagram, Whatsapp, his phone number, everything you could think of. New Year’s eve 2020 I get a text from a number not in my contacts and I add it to my contacts to see the profile picture on Whatsapp and it’s him with a new number. I blocked the new number and the first week of February he makes a new facebook and says “Could you unblock me? Need to talk to you” and I blocked him again. Since I blocked him in December I have not stopped missing him at all, I view his social media profiles multiple times a day (even though I blocked him) but he makes me feel very sad, miserable and angry and is quite damaging to my mental health but also gives me a lot of validation and I still crave it and miss his friendship. The past couple days I’ve really been feeling the need to unblock him (out of nowhere- is this manifestation?) and I have told my friends and all of them say to not unblock him because he was so horrible to me and I don’t need to put myself through this. I think I love him and I really want to unblock him but is it worth it? He clearly still wants me in his life because he keeps reaching out? I’m really not sure what to do because I miss him so dearly but our relationship became quite toxic for both of us? Should I make it clear we are no more than friends even though I like him more than friends still (or do I do this after I lose feelings for him)? Do I just have to wait it out until I stop missing him and that he the end of us? Should I unblock him because life is short and there’s no point hiding how you feel? I think he does regret his behaviour because he keeps reaching out but I think it’ll be the same as before- he’s sweet for two weeks then goes back to the douchebag he was in no time. Should I wait until covid restrictions are lifted and meet him in person once and for all? I’m a Virgo and 18 and he’s a Sagittarius and 19 if that helps anything. Any advice or opinions would be greatly appreciated. I’m so lost about what to do from here. Thank you in advance