I Am A 54 Year Old Man And I Have

I am a 54 year old man and I have been in a relationship with a wonderful women for 11 years and soon after we got together I started to lose my sex drive with her. She still had a healthy sex drive and the obvious problems started. We argued about sex constantly and I would just close up and say nothing. I refused to seek therapy or change. So as soon as we broke up I would start obsessing over her and then make promise after promise to make it work, this has been a re-occurring issue with me and after all the pain and heartache I've caused her she refuses to consider us anymore. But I am still tying to reconnect and my feelings are keeping me from sleeping, eating and she is all I can think of.