Spike himself was almost overwhelmed in return.  He could feel it, completely, utterly.  That he was loved, for the first time, as intensely and whole-heartedly as he loved.  Only that little counter in his head made him end that moment.  Licking her wounds closed, lessening the searing intensity of that contact.  But his lips never left the mark, his tongue licking it over and over, as his thrusts were pushing them both so close to climax.