News flash: most couples have zero in common with each other. Common interests are great and all, but they don’t make a relationships. Shared experiences and building interests together is really what counts. I would say there is probably a good reason why this bar guy and his friend are not together, despite how much they have in common. There’s also the societal notion that women and men can’t just be friends which is completely not true. Don’t get in your head about this.