I got my first girlfriend and I’m terrified

So not too long ago, a girl I’ve been friends with for around 2 years asked to be my girlfriend. Apparently she’s liked me for about 10 months, and I didn’t want to say no because I liked her a bit when we first became friends. I just sort of feel bad because I know she’s had around 4 boyfriends before but I’ve never had a girlfriend, so I feel like there’s some expectations that I just don’t know how to fill.

I also feel like there are some communication issues, I try to tell her about things but I never get direct answers. When I try to ask when we could hang out or go on a date I don’t get direct answers either. I even ask about plans she has for the rest of the week and she always says she has none but when I check her location I see she’s hanging out with one of our mutual friends or some of her other friends and just like, never tells me. I get she doesn’t tell me everything but still, I’ve known the guy she hangs out with and he’s my friend too but they’ve known each other way longer and when I hangout with them they always have better chemistry, and he even asked her out before, she said no but still. They also just have way more In common and when they were high they almost did the spaghetti kiss thing with a gummy worm.

There’s a lot more but idk I just feel left out and I’ve literally been losing sleep over this and have no idea what to do, I trust her but I feel like I’m going crazy, I know teenage relationships statistically rarely work out and I told myself I’d never date anyone, I mean at least I’m trying but this is not fun.