3 way relationships

Hello, I'm bisexual & I have an amazing boyfriend of a little over a year, I've had a few girlfriends in the passed and always have been very attracted to females. My boyfriend & I have had a few 3 somes. I asked him how he'd feel about dating me & another girl at the same time he said it wouldn't bother him as long as she was super cool and I was okay with it. There is no girl in particular but it's an interesting thought. What do you guys think? Would you ever have a 3 way relationship?