Well, that's question dear to my heart.  I am a 59 year old bear, and my partner in an open committed relationship is a 27 year old bear.  I was married almost 25 years when my wife passed away suddenly.  I had two kids, one of whom is a lesbian and the other the father of my 2 year old grandson.

I enjoy the company of younger men, and when finding play buddies, I remember how horny I was when I was 14 years old.  My partner prefers men who are a bit older than me - into their 70's usually.