I have been cheating on my gf with our babysitter.
I can't believe you would do that! What is your excuse?
She's always stressed with her work that's affecting our sex life.
If you think you're not satisfied with the sex with your partner, you should talk to her. It's morally wrong to cheat on her.
It's okay as long I don't get caught.
No it isn't ok, is the babysitter even an adult? You could get in real trouble! Cheating is always wrong and its not if she finds out but when she does.