Each Time I Nut Inside My GF...

...I see a slow-motion mental image of the end of my marriage.

My affair started 3 years ago on Valentine's Day. We work together.

Because my family uses location tracking, the only time I can be with my GF is lunch hour. My truck is a 2-door with no backseat, so I sit on the passenger side and she rides me until we cum. That position, with her on top, makes it even harder for me to pull out.

Keeping our affair secret is easy, but if she gets pregnant, there will be no way for us to hide that. I don't want to be a dad again at my age, but she's 25 years younger and wants more babies. Her husband has only given her one.

So it's a perfect storm, her on top, me not wanting to make a baby, her wanting to. I have her take a pregnancy test every 2 weeks. I know my luck is going to run out eventually, but sex with her feels so good, I just don't have the willpower to pull out.