Twins... Need advice ASAP!!

So, before I start I’d like to point out that I love twins. I think they are so cool! But I just wanna know if this is a bit weird. My best friend is going out with twin no. 2 for 2 months now. And I’ve had feelings for his twin for a lot longer and we spend quite a bit of time together. Recently I found out that he knows that I like him and he’s kinda made it obvious that he likes me. But not directly. I mean he’s always really nice to me and he looks at me different to others. And all my guy and girlfriends say that he definitely likes me. And his twin (twin no 2) ships us a lot and so does my best friend. I was just wondering if it would be weird if I did go out with him. Like my best friend would be going out with one twin and I’d be going out with the other. The twins are in the year above us as well. I mean age gap of the year doesn’t matter. I just wondered if it would be weird.

Thanks for any advice xx