Although i have had the oppurnity to have sex on the first date i have always respectfully decined. Being big gets me enough attention I dont want and being labled "easy" will only bring on more. I normally wait untill the second or third date before i even consider having sex.

That isnt to say that i dont understand the both partners being horny and just going at it. I have felt like that many times but i always think of what the conquences might be and decide that there is no harm in waiting a little bit.