Can someone give me advice?

Well, I have a friend well a gf and yes I am a girl. And we jus recently started dating. We both already have "husbands". My bf proposed to me and her bf proposed to her. And we both started to become bi curious and we thought it would be better to experiment together instead of with another girl. Both of our bf's agreed that this was okay cus her bf is my bestie and my bf is her bestie. I was jus wondering if staying in this relationship is worth it because we already know what we want in the end... HELP!