Heres the thing. Its all dependent on what you mean by "I left him."1.) If you preformed a reverse dedication ritual then yes, you left him, and he left you. That should have been painfully obvious while you were preforming it. Satanism is not a game, once you dedicate and you undedicate there is no coming back. End of story, so long goodbye. You are at the mercy of the enemy and are forever without him.
OR
2.) You just haven't focused on Satanism in quite sometime, ethier from fear, or lazyness, ignorance...ect...ect..., In which case, no you haven't left him. He's still in your life and you can fix your relationship and connection to him and Satanism whenever you are ready too, which honestly in my opinion should be immediately. You can do this by communicating to him, advancing yourself spiritually doing power meditations, leave anti-tracks and promote the advancement of Satanism, Send energy to the Gods, preform in online activism and warfare the list honestly goes on for a long time.
Hope this helped.