As long as a guy is clean, I'm a happy dater. But some of my friends feel differently. One friend can't deal with mustaches, and just yesterday another Sugar girl mentioned that seeing a comb fall out of a guy's pocket on their first date totally killed it for her. Other friends encourage (or, you know, book) hair appointments for their men — and they go. Do you have any grooming non-negotiables for the men in your life?