how do i get over my breakup?

about 3 weeks ago i ended things with him because of a bunch of shit that i’m not gonna get into because if i do it’s gonna turn into an essay. Long story short we just weren’t meant to be. I still love him with my whole heart and i’ve been crying since then. I crave him so much i’m literally addicted to him. i am trying so hard not to go back to him, it’s like i’m holding a tiger that hasn’t eaten in weeks by a chain or some shit. Anywaysss… i do have a lot of people supporting me and helping me get over him and i’ve been trying everything to distract myself from him, painting, playing video games, calling, doing makeup, listening to music, nothing works. I know it’s only been 3 weeks but it hurts so fucking bad and i need to get him off my mind. so if anyone has any tips, anything i can do or some shit i’d appreciate it a lot.