You made Lilly fat. You promised to be careful but now you're both stuck with someone growing in her belly. And she hates that. She hates this belly and she thinks she looks really fat. But you love it. This round belly turns you on. You sit with her and she talks about how much she hates it, that it's your fault, that she looks so bad. But you can't help it, it makes you so hard! You finally ask her if she can tease you with this belly, just a little. She's not into it at first but finally, she makes you cum for her belly.