your buddy lied to you, but i mean it is just such a classic fake story, "you think that's tight, wait till u put ur dick in it" - this is a classic line from a liar
like how it's set up, they were cuddling and then she started putting her fingers in his pants, really this shouldn't be in a story. how sex happens is always the same, it doesn;t need to be stated how the story arrived at having sex, but a person who is making up a story is nervous and thinks "well i have to set things up, it has to make sense, first she must get her fingers on my dick right, how does she do that... well we start with cuddling and then it progresses"
its a fake story bro, not because it's so cool no way a girl does that, lots of girls are kinky, really they all are in the right situation, but the story u posted was made up