Shit my first game crush was probably....hmm, man a long time ago. But I'd have to say Samus from the first metroid. I remember as a kid running aroudn the lobbies of the hotel my grandma worked at and dumping millions worth of quarters to play that game. If love at first sight didn't happen when I beat the game and saw Samus take off her armor, then I don't know what love at first sight is.
I would have to say Bastila from KOTOR and Lara Croft. My first was Ada from RE4. Other game crushes are Ashley Williams from Mass Effect, Sheva from RE5, Jill Valentine from RE5, Cortana from Halo, the captian of your ship in The force Unleashed, and that's about it.
I was a big fan of both Aika and Fina from Skies of Arcadia--I remembered reading in the Official Dreamcast magazine's preview for the game that there was going to be some serious love-triangle action there. Didn't pan out, I guess.
No, but that wasn't my FIRST gaming crush. That honor is bestowed on Captain Syrup from the first Wario Land game on the original Gameboy. You fight your way through the castle of traps to find her supine on a bed waiting for you, all come-hither-like. But before you have time to utter a witty come-on line, she jumps off the bed, rubs a magic lamp, and summons an evil genie to kick your ass. That genie is a F****** cockblocker, man. Though I suppose it's for the best: would we really want to see Miss Syrup get it on... With Wario?! Guess not.