Wouldn’t fit???

So I’m 16 (virgin) and I was planing on hooking up with this guy (we had talked ab it for a few days and everything was good) I got there and we had started making out and stuff but once he tried to put it in it wouldn’t fit. He has a pretty big 🍆( like 8-9 inch sry tmi) and I’m a relatively small girl. Ik that it’s ab how relaxed you are but I was pretty relaxed and it just wouldn’t go in. Idk what to do?? help