Dated an older woman once. The main thing that shocked me initially was that her body looked .... looser.... underneath her clothes than i was expected.
Like fully clothed she was slim and petite. and you pretty much know what to expect, but her stomach looked like it was deflated. skin wasn't as tight.
I actually audibly gasped the first time i saw her naked and she got angry at me.
But after that it was like any other relationship. but I wasn't the most mature type of dude that an older lady would usually go for (at least i assume) so i feel like she was probably just less mature than most women her age and that why it wasn't different.