Can't Give Her Up

I need to get this off my chest. I've been with my fiancée for the past 8 years now. I'm 33 and she's 31. I love her and want to spend the rest of my life with her, but for the past 6 weeks I've been having sex with another woman behind her back. As if that wasn't bad enough, the woman in question is our next door neighbour's 19 year old daughter.

I'm a session guitarist and started giving her guitar lessons in the new year. We bonded over a love of music and she was very flirtatious with me, even though she knows I'm engaged. She's astoundingly beautiful and confident beyond her years. I was flattered by her interest and reciprocated the flirting. One thing led to another, and one afternoon, we made love on her living room floor.

Afterwards, I told her it couldn't happen again, but she insisted that we could carry on seeing each other secretly and my fiancée would never find out. It's very hard to say no when a girl like that is offering to have a no strings attached secret affair with you. Since we're both at home in the days whilst my fiancée and her parents are out at work, it's been very easy to see each other, and we've had sex almost every day in pretty much every room of both our houses, including the bed I share with my fiancée.

I'm deeply ashamed of my behaviour but I'm so incredibly attracted to this girl that I haven't been able to stop. The sex is off the scale; her body, her libido and her sexual adventurousness drive me wild, and I've done more with her in a few weeks than I have with my fiancée in our entire 8 year relationship. The sneaking around just adds to the excitement.

It's pure animal lust, I know there's no future for us and I'm getting married in 6 months, so I really need to grow a pair and end it before we get caught and my life implodes, but as much as the guilt is eating my alive, I just can't give up my sexy little teenage mistress.