Women, if this happened to you how would you react

I'm a 25yo virgin cos of anxiety, body shame and that honestly I'm pretty small meant I've basically turned down like every situation that was leading to me getting laid
there's this friend of a friend I've met a few times out drinking recently she's funny, genuine, friendly and easy to talk to. She has a great taste in all sorts of shit I like plus she's really fit like way out of my league beautiful, each time I've seen her we were basically glued to each other all night, I'm meant to be meeting the gang tomorrow including her. Apparently she only came after she found out i was coming

she must have got my number off my mate as I was too much of a pussy to ask her and she said about me coming back to hers after the night with a winky face, somehow she's interested in me and i don't want to back out this time not again. but I'm dealing with so many issues, I'm fat, I'm small, i don't know what i'm doing I'm so fuckin neurotic and shit that I just can't get naked or get it out let alone have sex even tho i want to but i really wanna at least go down on her, always wanted to

so, girls if you went to go back to ur's with a guy you wanted to have sex with and you go to, like you're on the couch or whatever getting close then he says to you he wants to make it about you, tells you to get comfortable then goes down on you makes the whole thing about pleasing you but he stays dressed the whole time and once ur done he doesnt then try and have sex with you, like what would your reaction be. would you be like wtf or do you think i could do that?

I'm so worried about what i can do plus is it obvious why i won't get undressed or let her see me naked and shit