This is an interesting post about romance in the YA genre. Go, read it. It's most interesting because there are such strong opinions about it. I love romance. I love to write happy endings. I was the girl who, in high school, thought I'd found my "soul mate." Maybe I'm just cynical about it now because that is not the same person I married. I don't advocate marrying the person you're in love with in high school. I've seen people do it and it works for them, but I think the majority of people will not get that lucky.
I didn't date an insane amount of guys. Just a handful (like, count on one hand) and that was enough to figure it out. I've tried to get away from writing characters with no boy experience because, like I said above, I like to write happy endings. I don't want my characters to be the head over heels in love totally unrealistic type. I think a lot of people think of Twilight when it comes to this (isn't it funny how everything always comes back to Twilight? Love it or hate it, it's a phenomenon like no other). Bella had it too easy. But that's a whole other discussion.
The point is (I think) that love isn't easy. So we shouldn't write it that way. But it's something that everyone can relate to and everyone can understand. Everybody has different views and different opinions. So be true to what you know and believe and write from your own heart.