Late to the party here, but in my experience (of two law schools) the Outlaw/LGBT groups either swing towards nerdy/awkward and inclusive activists or the main way the gay boys socialize and network. Not sure which Cornell is, but you could stand a chance at finding some nerds there. You might also try a meetup website like meetup.com. They have a geek culture section. Ditto OKcupid. I know it's a dating website technically but it's fairly normal to use it to just meet people as friends and it's full of fen and geeks.

Alternatively, you could start a book club and pick some really nerdy book to start with...