Scared of it

So me and my boyfriend have been talking about the first time. He has done it before, but I haven't.

Since he knows more than I do I shouldn't be so scared as I am.

But I'm just afraid that we do it and I'll not enjoy it, or he'll do stuff and I wouldn't actually get there...

I don't know if it's because I haven't tried it before and don't know what it feels like at all, or because I actually might not be able to get an orgasm.

I'm just a little scared that he has set all of these big goals about making me cum aswell and that I might not even do it...

I'm just afraid of dissapointing him by having to fake it to make him happy.

It doesn't help either that he's 8 inches and pretty thick. I don't know if I can even fit for him...

Is this normal?