I also dated much older people when I was in my teens/early 20s. In hindsight, I really wish I had put a stop to that early on. I missed out on a lot of experiences my peers were having because I was always hanging out with a much older set. Now my older friends are in their late 60s and 70s when I am still in my 30s - and they aren't physically active enough to be much fun - and I still have no idea how to relate to people my own age!
Skeezyks had some good practical tips. I hope your older women aren't coworkers - or maybe we all have to learn that the hard way