It is EXTREMELY well hidden and you can only discover who it is if you have downloaded the Lair of the Shadow Broker DLC and finished the mission so Liara becomes the new Shadow Broker. You find this video clip by going into the back room where Feron is sitting and going through the video feeds on the platform on the other side of the back room.

I can't believe I missed it, but some people didn't. There's a chance he might be bisexual or pansexual, or that this video doesn't mean anything. However, why would BioWare take the time to create a video clip of this Turian sitting on a bed with a male human approaching him? The purpose of the videos is to show us that the Broker has cameras everywhere, even aboard the Normandy and in people's private offices and homes. However, each clip also has an associated message or "knowledge" with it as well, and many interpret this video to mean that this Turian is in a romantic relationship with a male Human.

If you can't remember who Preitor Gavorn is, he's the Turian that appears on Omega after you make the Vorcha leave the Market District of the area, the ones standing near the Quarian's kiosk. He's the Turian that stands outside of the Afterlife Club with a sniper-rifle near where you left to start the Archangel mission.

http://www.youtube.com/watch?v=ou6Jqy3Tdxc

I'll try to embed the video at some point, but I felt that this was a neat Easter Egg, and I can't believe I missed it the first time. :D