Surely something is bound to go wrong.

Whilst enjoying your relationship, you get the nagging sense that the wheels are going to come crashing down at any moment. Maybe someone will see you together, and tell your wife. Then it happens - Gemma starts missing your phone calls, asking for rainchecks, and just simply just not being available. You wonder if she is losing interest in you, but then you have to remind yourself that this was a no-strings-attached arrangement - you're not meant to feel jealous or clingy. This is just fun stress relief, and if it ends it ends. When it all comes down to it, you have to remind yourself that you're still committing adultery and cheating on your wife. No matter how innocent and detached the physical sex is from the emotional component, cheating is cheating. And this can't go on forever.

In the end, you were being paranoid over nothing. Gemma it turns out, has a life of her own, and you were just being incredibly selfish thinking only about yourself. In one of your many conversations, you discover that she's gotten a part-time job at a cafe, and has been taking night classes at the local community college. It was silly of you to have expected her to have moved to a brand new town with her father and not do anything with her life at her age. Fortunately, she doesn't realize what a self-absorbed ass you are and remains ever-generous with her body. Even if she has less time to play, she'll always make the time to suck you off whenever you ask. You feel embarrassed that a girl more than half your age can demonstrate even greater maturity than you.