idk what to do 😥

okay so this guy i went to summer camp with recently started texting me and was being really flirty. One day i needed his help with something which was advice on what to do because all my friends were talking about how they have already lost their virginity or have done stuff with a guy. I ended up saying never-mind to him and then he insisted that i tell him what i was gonna tell him so i did. i told him that i was embarrassed that i hadn’t done anything with a guy. He explained to me that it was okay and that he’s also wanted to do things that he’s never done before. Then i got more comfortable around him and asked him what he wanted to do and that i would let him do it to me as long as i was comfortable with it. The problem is that he’s way older than me (i’m 13) and he has already started talking about losing his virginity to me and stuff and i’m just stressed that things will go wrong and people will find out and i just have so much anxiety about it because so much can go wrong ugh. Can someone please help me?!?