Bisexual threesome is hot

I am a bisexual woman. And I always want to have an open relationship with my partners. Yes, partners. I have a boyfriend and a girlfriend. And they don't know each other existed. Until one day, my girlfriend saw me kissing the boy. She knows that I am a bisexual but don't know I have a boyfriend. I thought it is a chance for open relationship, so I explained to her and persuade her to have a threesome dating with my boyfriend. She loves me so she nod her head. And we have an amazing three way.