Unexpected fun with [M]y G[F] and a [F]ellow redditor online

My girlfriend and I have been in an exploring mood lately and things heated up last night.

Part of our exploration included me starting to chat with people to have some online fun. A bit over a week ago, a sexy redditor DMed me after my post and we started chatting. Pretty clean at first, just getting to know each other, testing chemistry a bit. The the questions and discussions became a little more raunchy