It seems to be going pretty well.

It's a strange, uncomplicated relationship that you've developed with Gemma. She definitely wouldn't be someone you'd describe as your mistress or your girlfriend on the side. More like a friend with benefits. You might nail her in the restrooms of a fast food restaurant, only to be sitting outside on a bench drinking a milkshake with her moments later. Sometimes you call her up for a meetup, only for the two of you to decide that you're too tired to fuck and instead go and watch a movie. That's not to say your sex life has become stale and boring of course - she's still incredibly flirty (in a fun way, not a scary aggressive way), and makes you feel desired. It's just that the two of you actually have conversations and aren't just pieces of meat screwing each other. Of course, when you do actually go at it, the gloves are off.

You catch yourself developing feelings for Gemma, but not the romantic 'I want to leave my wife' kind of feelings. You can't quite put your finger on what it is. At first, you think it might be a protective fatherly vibe, but that just weirds you out when you consider you've got your cock up her ass for several hours every week. You've definitely developed what you'd describe as an affection for her. There's something charming about her, something that keeps you coming back for more than just the sex. Everything is just easy when it comes to interacting with her. After a few days of thinking about it, you come to the realization that maybe it doesn't matter, and maybe this crazy arrangement of a relationship you're in defies definition.