I'm looking for a story but can't seem to find it involves magic, the story started by the Male character being unable to control himself near a Female character so he goes to his best Female friend who can perform magic to get rid of his premature ejaculation but he was warned he couldn't cum or there would be dire consequences but unfortunately he gets paired with the girl for a project and prematurely explodes when he goes to her house resulting in his penis and balls getting removed. 

If anyone can remember and link this story it would be a massive help, thank you so much