My girlfriend recently joined a coven of witches and came back looking like a succubus with tits bigger than her head. Now she wants me to join, and let them magically expand my ass and titties too. What should I do?
If you're having trouble deciding, let me try rephrasing the question:
Would you rather go about your normal life as it is right now, jealously watching your curvy girlfriend bounce her titties and experience a sort of camaraderie that you'll never know? Or would you rather have a body that inspires both lust and envy in extreme and equal measure, all while surrounded by similarly sexy women experiencing pleasure beyond your wildest dreams?
Your girlfriend is only going to get bustier from here. The coven has her and she won't be easily convinced to leave, especially not as her breasts swell bigger and bigger. Every burst bra, every leapfrogged cup size, every mind-melting orgasm brought on by groping her massive and growing tits will only prove to her that she's done the right thing. All she wants to do is share the excitement, the joy, the pleasure she feels from finding the place she belongs and coming into the body she was meant to have. You wouldn't deny her that chance, would you? She loves you! Would you let envy and petty jealousy get in the way of something truly incredible? And she's relatively new to the coven! Just imagine how busty the older members are, or the High Priestess, herself! They call her "Mother" for a reason.
As if turning into a being of pure lust and fertility, with huge tits and wide hips, wasn't enough to tempt you, you'd be joining a group that truly values you and respects you. The coven would welcome you as one of their own, teach you their rituals, help you become who you were meant to be! Your girlfriend is already there and she can help ease your transition into being part of a group. It'll feel so good to finally have a place you belong, a place where people accept you. Of course, because of all of their hard work in making you grow from chest to breasts to boobs to tits, it would be rude not to let them experience what they've given you, right? It'll be incredible, I promise. A whole coven of witches groping you, kneading you, sucking on your tits, grabbing your ass, their black fingernails mapping every new inch of your body. The sounds of your moans, in synchrony and harmony, will praise the Goddess to the highest degree. You'll all be one.
Anyway, the decision is ultimately up to you. I know what I'd pick in your shoes. Then again, I am an incorrigible pervert, so take my advice with a grain of salt from your circle.