He's the guy with whom you can discuss your deepest relationship secrets, insecurities about your body and the one you go to for fashion advice. He's not your boyfriend – he may already have one of those himself. He's the Will to your Grace, the Stanford to your Carrie, the Kurt to your Rachel...he's your gay best friend. And a new study conducted at Texas Christian University may prove that if you don't have one, then you need one. If you think about the relationship dynamic, it definitely makes sense. The study, published in the journal Evolutionary Psychology, boils the relationship down to one obvious benefit: "trustworthy mating advice." In other words, a gay man and straight woman will offer each other good relationship advice without any ulterior motives.