Who is the gay celebrity fangirling in this gif?

Okay, I know this is a strange question, and probably not very politically correct either, but it's driving me insaaaaaaane trying to figure this out! There's this gif floating around Tumblr of Justin Timberlake looking all upset over Madonna and Britney kissing, and just to the left of Justin's ear is another slightly blurry celebrity fangirling over the moment. Everyone seems to be convinced that it's Neil Patrick Harris, but I'm positive it's someone else. I have his face pictured perfectly in my head, but other than that I have no clue what this guy's name is or whar show / movie I even recognize him from! Ughh, I know this is so stupid, but it's making me crazy... D:

http://25.media.tumblr.com/a89ff8c10bfe23834fa3151...

So... any ideas?