hooking up!

Sooo I'm 15 and I haven't really hooked up with anyone and this guy I'm talking to is really really cute and makes me feel very good about myself but I have severe anxiety and I can't even think about hanging it with him but I might tonight! And we have talked about hooking up and I really want to because lately I've been really horny!!😳 but I don't know what to do and I'm afraid I'll make a fool of myself. He knows I haven't done much but he's super nice and we actually have convos other than flirting and he hasn't asked for nudes but I've kinda teased him. Help!! How do I make myself feel comfortable and stop freaking out! I know I don't have to do anything with him but I want to hang out with him at least and I don't want to be so nervous or I won't be myself.