Pretty girls do get "a lot" of attention, but not "all" the attention.
In high school, the most attractive female get "all" the attention from the males. After all, what do the males have to lose? It's not like any of them are going to marry her. It's not like any of them are going to start a family with her. It's not like any of them are going to be paying for her. It's usually nothing more than a one-day ordeal. Will you be my Valentine? Will you go to the Prom with me? If a male has to shoot only one attention arrow from his quiver, it's going to be aimed at the most attractive female.
But what about the most attractive female? What about her POV? She can only accept one arrow, and has to reject the rest. What about her ego? What about her relations with other girls? The male attention she gets is both a blessing and a curse. In the short-term, it makes her feel good. In the long-term, it taints her personality, jades her, and ruins her relationships with other girls. It's like a drug a mere child is in no position to say "no" to.
Life goes on, and life continues past high school!
Guys now split, with respect to the pretty girls. Sure, every guy would love to f*** them. There's a reason for the split however.
One group of guys reason that pursuing these girls is "worth it." Why? In their head, all they intend to do is have sex with her, show her off to his friends, and when her demands start getting high, he'll dump her. In other words, he has NO EXPECTATION or plans of realizing the costs of being with her. These costs are not just financial. Since her personality has been tainted, and she's been jaded, she needs more attention and validation than most other girls. Her desire for sex is practically non-existent, so all the sex that guy THOUGHT he would be having with her, is out the window. She needs to be on top, socially, emotionally, and the relationship has to revolve around her. After all, in her mind, "she is the prize." This will cause these guys to give her loads of "initial" attention, and once her price becomes obvious enough, they'll behave rationally and leave. Why? Economics; cost-benefit analysis. Her asking price FAR EXCEEDS any and all benefits she has to offer.
The second group of guys reason that pursuing these girls is "not worth it." Why? These guys simply go through the cost-benefit analysis FIRST. By doing so, the conclude (unless proven otherwise by her, which rarely happens) that her price FAR EXCEEDS any and all benefits she has to offer. Additionally, the benefits these group of guys usually have to offer FAR EXCEED any and all benefits she has to offer them. Therefore, it makes no sense for HIM to pursue HER, and because SHE would NEVER pursue HIM, these guys don't even have to "leave" her if they never put themselves in that situation to begin with.
What does that mean for those girls?
It means they get all this attention, but at the end of the day, they've lonely.