Honestly it doesn't matter, if she likes you she'll let you pound as much as you want even if you last 2 minutes or you can't make her cvm. She won't make a big deal of it.
If she makes a big deal about penis size, making her cvm, circumcised or uncircumcised penises then you have a slvt on your hands. She will drop you if you lack in size or the skills in bed.
So it depends on the girl. But even if you don't make her cvm don't feel guilty about, don't even ask her if she did. Your nut is all that matters, if she wants to orgasm too then she'll have to speak up it's not your duty to figure it out.