Libido as you age

I don't know why, but my libido just seems to be on the rise in my fifties. Sadly my spouse seems to be losing her libido. Anyone else in the same situation, and how are you dealing with it?

My ex wife hit 50 and her libido completely died. Mine stayed the same but the past 5-7 years and I am now 65 going on 66 its declined.