Girls dont do that

I think people sometimes make do with the limited selection of potential friends available to them. It's not like they were at school with a pool of a hundred or more kids to choose from.

Actually, girls do that, unfortunately boys with awkward social skills are more likely to flinch and run away than stand their ground and take the kiss.

Nah, do you honestly think all beautiful girls are like that?.. that's not the way it works in real life at all.. plenty of girls go for the shy type everywhere you go... they're not all shallow robots who only accept a "perfect man".. regarding the character in this movie, she was misunderstood by her friends and clearly didn't have anyone else to relate to.. she simply found that in the other boy.. I don't see how that's hard to believe.

You are generalizing way too much for one thing. For another they were both lonely kids from broken homes who felt like they didnt fit in. Her character also seemef like the type of girl who didnt realize how pretty she was. I knew some girls like that when I was growing up.

yeah her following him on the bike was unrealistic but the rest was plausible.
plenty of girls talked to me like that too when i was at that phase.

"Girls don't do that" is too much of a blanket statement. Perhaps most attractive female teens don't do that, but Susanna (AnnaSophia Robb) showed that she wasn't a sheeple in her interactions with the other girls at the beach sequence. It became increasingly clear that she wasn't going to allow the alluring Steph (Zoe Levin) to socially manipulate her. She felt like an outcast in the situation and needed a friend; and Duncan -- who was in the same boat as her -- happened to be there. Besides, Duncan isn't all that dorky or nerdy. Most importantly, the two gelled once the awkward introductions were out of the way.