Struggling to move on from my breakup

Ever since my ex broke up with me, I felt so lost and hopeless and I really hate this feeling. The feeling if jealousy whenever he's happy without me, and the feeling of having to think about him 24/7. It's like his memories are haunting me becajde Everytime I wanna sleep, I think about our happy memories and our bad ones too and it's so hard for me. For some reason I still have feelings for him and I really am struggling to block him on every social media because Everytime I do, my mind tells me "unblock him, he will come back" and so I did unblock him. I constantly check his social media accounts and feel so sad whenever he has moved on. I don't know why I'm always feeling like this and I'm really struggling with it. It's been 2 months already and I still do those stuff 😕 it's so difficult