How do I get over this guy who I was never even with?

I know it sounds strange trust me I do but let me explain haha. I meet this kid a few months back & I really liked him. We seemed to hit it off really good at first but then we stopped talking & idt we will ever talk again. Probably for the best considering he was into somethings he shouldn't of been but I honestly just felt so different around him. A way that I never felt with anyone else. I know that sounds weird but its true. I had feelings for him that I just never felt with anyone else before. Maybe its because I never dated alot? Anyway I think about him alot I'm not like obsessed he is just always on my mind I guess. Anyway there is this guy now who I know likes me & he is cute there is nothing really wrong with him personality wise either but I feel like I can't move on to him because I still think about this other guy...& I'm not sure I really like this new kid anyway. Idk maybe I just like the chase. How do I just move on??? I really need advice on what to do....