Yes, physically MOVE! You must fill in your days and times that were spent with the other with new pursuits. You CANNOT leave the gaps into which you’ll be pouring guilt, resentment, grief, hope, longing – stop! Flood those moments with fully engaging activity. Hit the trail, the gym, the yoga mat.
You might have to move your address too depending on your proximity to the other. This is a basic requirement if you are ever to MAKE SPACE.