Ok..is this weird to you?? 😭😩

So I have had a bf for a while, he is sweet you know... but I started having feelings for a girl. I told him about it and he was like yeah as long as you're open and honest with me you can be romantic with her as well. Sooo what do y'all think of this? I really love them both and he is okay with it but i feel like this is something most people would look down on. Is it normal? Weird? 😩