It depends. Is your relationship monogamis? If so you'll have to pick one atau the other. Lots of people on both sides only want one partner. Some people don't mind. You'd have to talk with anda boyfriend.
What guy wouldn't want a threesome with two chicks? Just talk to him about maybe trying something with another chick, he'll probably let you, even if he can't be involved. Either way anda should talk to him about it, and if he can't accept that anda might have feelings for another chick, he's not worth it anyway.
Well, From What iHeard, It Isn't Bad That anda Have A Boyfriend And A Girlfriend. It Isn't Considered Cheating At All Unless anda Are Cheating With The Same Sex. If anda Have A Girlfriend But Have A Boyfriend, Its Okay. If anda Have A Boyfriend, And Another Boyfriend, Then That Is Totally Not Cool. If anda Have A Girlfriend, And Have Another Girlfriend, Then Thats Just Downright Mean.! But Yeah, It Isn't Bad So iWould Talk To My Boyfriend About Then Talk To My Girlfriend About It. Then If They Agree, Then iKnow That They Understand. If They Don't Agree, Then They Don't Care About Your Feelings. So Yeahhh....