If both girls are bisexual then it will work. Other than that i find it hard to believe that somebody wont get hurt here. It all seems very strange to me. I couldnt bear the thought of sharing my partner with someone and hed prob end up in prison if some bloke was trying to get close to me coz hed have him killed lol..
But we both firmly believe in monogamy so who am i to judge other peoples beliefs. Some people might think were strange lol but he is my best friend and my lover all rolled into one-perfect for each other in every way and happy. The thought of him wanting someone else feels like a knife cutting through me. Hope it never happens. And i no hed experience pure rage even tho he is not an angry person by nature.
Let me no how this works out for you. I am intrigued to know if it can actually work.