I have a crush on my friend, but this new girl is making me feel

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Alright so basically, I've had a crush on my best friend for a long time now, he doesn't know I'm into guys and he could be bi, or maybe just using me as an outlet because he doesn't have a girlfriend

I just started going to a new college, and the first day I met this fucking qt girl with short pixie hair, shes so gorgeous, and the first time I saw her I had stomach knots, I haven't felt this way about a girl in my entire life

>we've started talking and shes amazing
>the last time a girl gave me stomach knots was in like 3rd grade, i realized I was bi in highschool but never really felt anything romantic for girls

What do I do? My Bestfriend could be into me, but I have no idea what to do with these feelings towards this girl, I've felt sick all weekend just thinking about her, every time her face comes into my mind I get weird and 'sick'