The Way We Live

My little sister (35) and I have been a couple since we were 15. Only no one else knows, obviously.
We were always closer than most other siblings, very affectionate and protective of each other. We were left alone at home during most of our early lives, so when we became teenagers, a relationship developed. We lost our virginities to each other and, save for one scare when we were 16 and our time away from each other because college, we have never stopped being lovers.
We're well aware that we will never be able to be officially together, out in the open. So we have resigned ourselves to the bittersweet conformity of appearances and esporadic bliss. We both married other people and have carried on our affair carefuly and discreetly ever since.
It's not as difficult as we thought it'd be: she's very desirable, so she didn't have trouble attracting the attention of some wealthy guy that wanted her for a trophy wife. And my wife travels a lot, so we're left to our own devices rather frequently to date, fuck and have fun in general without spending too much time apart. We still fuck at least once a week, and it's pure bliss. I'm so in love with her, and I still desire her so much it makes me crazy sometimes.