I've not yet had sex with a girl

So, i'm like 98% lesbian, and i've got an amazing girlfriend.we've been together nearly a year, but we haven't had sex yet, because we both wanted to wait til we knew we were ready and sure. i've always wanted to wait til i found the girl I'll marry, and I'm pretty sure Rosie is that woman.
The other day, she told me she's ready for sex.
She's a total virgin, and i've had sex with guys but not girls... and I'm kinda nervous. I don't want to be bad. I've fingered a girl, but i wasn't exactly paying much attention, because i didn't really want anything to do with the girl, and i wasn't attracted to her. i pretty much just did it to shut her up.
But with my girlfriend, Rosie, i want it to go well. she's the first person I've ever legitimately WANTED to have sex with. But I don't quite know how. and I'm afraid that i won't be any good. and so i'm kinda having really horrible anxiety about this.

 

I know the anxiety that your going through. I recently had my first time with a girl back in September. I was over thinking the whole thing and literally made myself so nervous I couldn't eat. So I'm going to tell you to just calm down, relax, and let it come naturally. As a girl you automatically should know what to do, since you have the same parts. Just start off with what you know you like and she'll help you from there. Communicate with her while your doing it. There's no rush. You figure it out as you go. It's not like having sex with a man and having to know your place. It's all experimental and definitely more emotional. Don't think about being bad or whatnot, just see yourself as a beginner. Hope that helps and good luck.

 

you say start off with what i know i like... but i don't know what i like... like, i don't masturbate, simply because i've never felt the need to, and it's been so long since i've had any sexual contact really, i don't know what i like....
thank you for the other advice though

 

Do you fantasize?

 

yes, i fantasize, who doesn't?

 

Don't over think it. Just go with the flow when you are with her.

 

i agree, just roll with it, let it happen naturally. you'll love it.

 

Honestly I think you need to play with yourself to see what you like...

 

Well I'm just saying, if you fantasize, you should have a general idea of what you might like. So maybe she'll like that too. Maybe you could ask her to agree to start slowly here and there, and see how far you're confident going each time, with no real expectations until you're feeling it.

 

so basically, i'll know what to do when the time comes?
otayy.. thank you all