You never thought you'd be one to cheat but ever since your wife got pregnant, she's been completely against the roleplay you've both always loved to engage in. It's genuinely the only thing that turns you on, something that she knows--it was the core of your sex life from the very beginning, you even met on a kink site just for this particular fetish--but it doesn't matter. Now that she's pregnant, she doesn't want to pretend to be anymore. You thought you could hold out, but you can't. Especially as you watch her body change, becoming such a yummymummy, but knowing its off the table.! You thought you'd been really discrete about it, but apparently not. After a get together where you told everyone the wonderful news, your stepmother confronts you about how secretive you've been on your phone, sneaking away to use it, constantly checking it. She tells you she knows that behavior. She wants the truth. But how can you tell HER about your milf fetish?? That's insane. But she's so insistent, begging you to come clean and tell her what it is you so desperately need, need so badly that you're willing to throw it all away. Once you say it...you start to get an idea. She's so desperate to help you, so willing to do "anything" to prevent you from ruining your life...and that dress, it's just so sexy...even if she is your stepmom. Besides, its not cheating if you don't touch. You'll just roleplay it, masturbate together while you indulge in some really, truly dirty talk. She balks at first, but when she realizes your serious--when you take out your rock hard dick and start to stroke--she gives in. God, you can't believe how hot it is, in real life. Is it even roleplay any more? No... But you don't care. Watching her expose herself, milking her big tits and telling you to stroke--you've never been so hard. You've never wanted something so badly. You've never wanted something so wrong!