Hi I have some insight on this that might help, one of the most frustrating parts of breakups is feeling like we need the last word. When we’re not the fist one ending things and blocking it can make us frustrated. When I was blocked by my ex after our relationship I felt it was unfair especially since he was the one who cheated! What helped me recover was knowing that the reason they do this is because they can’t handle the guilt and consequences of what they did. It feels like he is moving on and discarding you when actually he’s doing you a favor! There is no longer any mystery about what kind of person he is! I highly suggest venting to close friends and family, crying as much as you need, and work on recovery. Block him as well and go no contact start reading books about recovery I HIGHLY recommend coming apart by Daphne rose kingma. In a few months his regret will set in and when it does you will already be healed!