how to stop hoping he’ll break no contact even tho he’s blocked

I genuinely can’t go a few hours without thinking about him and it’s driving me insane. I miss him really badly. He dumped me last month and I know he’s not coming back but I still hoped that he would contact me so I’d check my notifications constantly. I blocked him a week or two ago because of that but I still can’t shake that feeling and I still can’t get him out of my mind. Literally will take any advice on how to forget about him besides getting involved romantically with other people because I think that’s unfair.