Sorry but either you're trolling and this story is bullshit or your girl was a slut and you're a damn fool for two reasons; 1: you just watched your girl get nailed two feet from your face and stayed with her for a year! 2: you don't know how to work what you got SMH....
First impression reading this story OP: 1) Did not encounter this, but wrote a fictional erotic story. The details and the way he told the story were giveaways. 2) Probably does not have a girlfriend, Amy or not. 3) Has a penis under 5.5 inches.
I think my previous post explains it all for the most part lol I don't think details are necessary but it is very much possible... Then again I just might get unusually turned on by that particular act
You are my kind of girl. But I already knew that I've never cum from sucking dick, but I do get extremely turned on.