If you answered yes to this question then chances are you may still have some feelings for this person that probably need to be addressed. Can I suggest something? Think real hard about why the two of you are no longer together. Was it your fault? Was it them? Either way it goes you both are no longer together so the best way to get over this is to play Fantasia's latest song "Even Angels." And get your strength back! Move on and realize that "Even Angels Learn How To Fly."
If you feel the need to at least keep the friendship ( if possible ) then reach out and see if they agree. I don't suggest sitting around calling from a blocked number, then hanging up. This does not allow healing it actually causes more anxiety about the matter.