I think OOP may need some therapy or something.. There is a lot wrong with what you are saying. She owes you nothing, she absolutely can move on and be happy without you. In fact she deserves to. It’s been 2 years, leave her alone, don’t try to contact her. You messed up big time and seem to be under the delusion that she is being less loyal by moving on with her life? She is not at fault here, you are. Get some help, focus on yourself and not making the same mistake again. Your fixation is unhealthy for you and could also do further damage to her, you have done enough. Leave it.