The saddest part in life is saying Goodbye to someone you wish to spend your lifetime with. The saddest part in a life would be to spend a lifetime with someone who didn't really want to spend theirs with yours.
Ann loved Connor so much that she was ok that it was hurting her. Ann was broken so Connor could be whole. Connor had his bad days and she was always there for him to comfort and make him happy. Ann was a great girlfriend while Connor was horrible to her.