According to this dating guide, the key to finding a soulmate might be finding out if he drinks Budweiser or Red Bull.

In Brand Guy, marketing researchers Bill Vernick and Claire Farber explain their theory that women should judge men based on what brands they buy.

The authors break men down into ten 'brands': There's Bud Guy, Beemer Guy, Nike Guy, Tom's of Maine Guy, Comedy  Central Guy, Celestial Seasonings Guy, Abercrombie Guy, Q-Tip Guy and Red Bull Guy.

Here's more on the survey and how to pick your guy