My stepdaughter comes to see me in my office and ends up under the table...

My stepdaughter comes to see me in my office and ends up under the table because we've been having sex for two months now, and I hope it stays a secret, hence why you can't see her face, friends. If my partner finds out that her daughter is giving me oral sex and I'm having sex with her, I think she'll kill us both because she's a very jealous woman, and I admit that what we're doing is wrong...