What about loss of female libido? I used to be multi orgasmic. Now it is work getting off just once. Do I have to spend my life faking it?
Could be a number of causes. Stress, a physical problem, etc. I would suggest seeing a doctor for a complete physical.
Towards later years things do slow not that i'm suggesting your old but could be part of the problem seeing a Doctor would be a good starting block.
Correct, as people get older things change (and sometimes not just then, sometimes women have these changes with the birth of children or other things). Many times it is about hormones and chemical imbalances. A talk with your primary care doctor and a few tests can determine if that might be the problem.
As for faking it, I never recommend that. I think it is unfair to yourself as well as your partner.