Alibi is a confusing place in many ways. I found it difficult to really determine whether the boys were actually gay or not. It was not obvioius (which I guess can be both good and bad). Testaccio is Rome's bar/club area for the young and fashionable. Unfortunately, it is on this curved dirt and gravel road surrounded by little shacks that made me think someone was going to jump out of the bushes and carry me away. The area seems tucked away and almost impossible to find on your own. Luckily, all the taxi drivers know exactly where it is and make it easy to get there. But it's one bar/club after another, usually just steps from each other with the mixed (men/women/gay/straight) crowd freely mingling in and out of each. So, you are never quite sure what's the deal. The night I was there, it was full of American students who were either confused or annoying or both.
Either way, the Italian men are disarmingly handsome (and many don't act like they know it, which is even hotter!). So, it may be a bit of cat and mouse to ascertain whether that hot guy is looking at your package or your Pradas.