There was a time when I loved him so much. Maybe I don't know what love is. People in this country often seem to feel that when we feel that exciting, first flush that that is love. That feeling is so exciting but not long, lasting.
True love is much quieter and much deeper than that.
You may no longer feel fireworks anymore. That does not mean that you no longer love your boyfriend. It may mean that your feelings have changed and deepened. If you look at him and feel peace and calm and contentment, this still could be love. You need to go back and ask yourself what was love for you before.