Have you purposely looked for a partner with a large age gap, or did it just happen?
My husband is 11 years older than I am. It was not something either of us intended! I grew up being intimated of the "older kids" in school, while some of my popular friends dated the "older guys". This was never my personality, and my highschool boyfriends were all in my grade. In college, I had a slightly older boyfriend by 2 years, and I thought that was a big deal! When I started a professional job, that was when I was exposed to many different ages, and met a few men and women who were decades older than I was, but we enjoyed spending time together after work. One of these men was particularly easy-to-talk-to, and long story short...we started dating, got married and now have two kids!
I have heard about men and women who purposefully seek out partners who are significantly older or younger than they are. I have never understood this, even though I am happily married and get along great with my husband. There are a few gaps that we can't talk about (anything that happened in the 70s, for instance...I was 5 years old, and he was driving...creepy!!) HA!