Bi sexual or bi curious???

Growing up I never questioned my sexuality I was always attracted to boys and never girls however as I got older and started discovering porn and touching myself I realised my porn preference is usually watching 3 people ( 1 guy and 2 girls) a few years ago after a drunken night out with some friends me and one of my closest friends went home to her house and ended up kissing and laughing which turned into full on nipple kissing and going down on each other. The thought of this still turns me on and the last couple of years I’m dying to get with a girl again. I currently have a boyfriend I’m really open about my feelings with. I have asked if he would have a 3some with me and another girl but he says he isn’t up for it as he wouldn’t want me to get jealous but I honestly don’t know how I would feel the thought of it excites me so much but I don’t know if I would be jealous of him touching another girl. He has also said he wouldn’t mind me going with another girl as long as there was no feelings involved. I don’t know if I’m bisexual or just curious as I’ve seen a lot of posts of straight women enjoying lesbian porn etc but I am literally dying to have sex with a woman again I don’t think it’s normal 😩