How can I move on ? (SORRY ITS LONG)😅

Hi there ladies I have a story and I feel kind of stupid because I haven't been able to tell my friends how I feel. So I was dating a guy for 7 months but we had been really together for 9 or 10 months. I know I'm only in high school and this may have not been real love but to me I felt like I was in love. I had never dated anyone before let alone do anything sexual (no we did not have sex thank god) but he was basically my first for everything that we did. There was a spark of you would say that like I can't seem to feel with anyone else. Like every time I saw him or was with him I would feel so happy inside and there would be those tiny butterflies I would get with him. Now you may wonder, what happened? Well he smokes and I had never smoked before but in the beginning it never bothered me but I didn't really like it so he rarely ever did it. Then around the 4th month we were together it started to get more frequent and that's when the problems began. Beginning of march we were supposed to go to a basketball game to watch our friends well he was going to pick me up and oddly he came 10 mins late and then just texted me "I'm here" and I found it odd because he usually comes up to the door and says hi to my mom or siblings but at the time I didn't think too much of it. Well when I got outside it was dark and I couldn't see that his eyes were EXTREMELY red. So I got into the car and both of his friends were there and once we start driving I instantly smell weed and I freaked in my brain he was so high he couldn't concentrate on his driving he eve told his friend "put the music down I can't focus". I was so furious that I didn't talk to him the whole game or even until the next day because I refused to let him take me home and he left me at the parking lot crying while my friends comforted me. We talked everything out and then things seemed to be fine. Well it wasn't. Both of our birthdays are in March and my parents decided to take both my boyfriend and I to Disneyland and it was just gonna be us four well he decided to bring an edible and I kind of just looked at him and was like I'm not gonna take it and he threw away right before going to the park and it was just kind of frustrating because it's like it's both of our birthday month and I thought I was just gonna be a really good month because I have severe depression and I was just really looking forward to that month. So I kinda just brushed it off. Then in the last week of march he decided to take LSD. I had known that he was a couple days before due to his friend telling me. And I was really waiting for him to tell me but he didn't tell me until after he took it and then it broke me. And he said all these things like "I'm gonna make it up to you" "I won't ever do it again I'm so sorry" "the last thing I wanted to do is hurt you". Once all this happened our relationship turned into a downward spiral. He was my rock I had told him everything and I was so vulnerable around him at this point. Which in most cases I would never get like this it's actually very difficult for me to even open up to people or even cry in front of someone. It took me 4 months before I could cry in front of him. The last month we were together I had asked him to just not smoke for one month JUST ONE MONTH. I said if he did it then we would be done and broken up. Well three days after he said okay he did it but at the time I didn't know it was in until a week or two later that I had found out because we had had a really rough night and we were supposed to hang out and we end up not and he hung out with his friends and the next morning he told me that he had smoked and I told him that I was pretty much done and I cant be with him but him being honest made me wonder if I should stay with him but that all changed when his friend told me he had smoked a few weeks before that and he said "I had no excuse there" so we broke up in June and then he hooked up with 5 girls in the first 2 weeks of being broken up and I found a cute boy. The thing is he didn't give me the spark or the feeling that I felt with my ex. Well that was short lived and now I'm here. And I know I shouldn't get into any relationships right now but it sucks when both of your best friends are so in love and you're alone. Like I had that and it was just ripped away. It's been almost 3 months and I still can't get over him. I just wish things were different and I guess what I'm asking you all is what I should do to move on. I'm happy for all my friends it just hurts when you see their boys look at them so in love and obsessed with them and then there's me who feels like I just get my heart broken and ripped away. Like I just want to be able to find that spark and joy I felt before. He was a great boyfriend if you would've taken away the weed from him I could tell you that I would want to marry that boy. But he's just so addict and the fact that it feels like he chose weed over me hurts even more. So ladies how do I move on? How can I just stay positive because I have none.