Hey guys, just a quick question. ive been with my LTR for some while now and the concept of a threesome presented itself with her and another girl. she's turned on by the idea and, naturally, so am I. however, as we got to talking about it, she said she would also want to do it with me and another guy. call me hypocritical or selfish, but im not down with that. what should I do?

EDIT: Thank you all so much. I love you broz. I told her im not down for mmf but mff is fine by me. she said it wasnt fair and I left her house immediately. she then texted me saying sorry and we would talk about it later.