Dude, same here. 21 years old before i dated anyone. It was a promise i made to myself and Jehovah and i kept it. Don't rush it. But for you its more of a big deal because of the world we live in. People (sadly even around us) are dating younger and younger, some even before they are 18 and out of school! So there is obviously pressure for you to do so and because of that I salute you and have lots of respect for you.
And as a side note: Sometimes it works out that you meet someone you want to marry, but sometimes you meet someone and you think nothing. And one day you wake up and they are someone you want to marry. The love at first sight thing is nice, but a fallacy in the requirement dept.
Can't believe i said that w/o bitterness can you?