How do you stop being shy around him?

So I just started dating someone but we’ve been friends for a while and I’ve sorta gotten to know him quite well. We’ve always had an interest in each other but he hasn’t had the balls to ask me out until recently. We haven’t been alone together for a while and I feel like it would be extremely awkward and I’m already so shy enough around him when we’re with a bunch of people, so any advice? I’m turning 16 soon and this is literally my first legit relationship mainly because of my shyness 🙄