"Never have so many given so much for so few" is I think the quote.
My point is that potentially we're about to see Ellie get intimate with Julia. An internationally acclaimed prima donna, who has already performed across Europe. Aaron is the MVP of her school's basketball team, so a real coup in her quest to become head cheerleader. Logan is a college student and underwear model for a huge fashion label. All three are incredibly successful.
Also, many of the choices you can make on the Dylan route are mutually exclusive to the Ellie route. It's possible for Sophia to not continue watching porn, only to be caught by Sophia masturbating in the shower. But Sophia needs to keep watching porn in order to be caught by Ellie. But more relevantly, whether or not Ellie is with Julia is dependant on whether Sophia attends the soccer match or not. Which determines how many goals Dylan scores, hence his successfulness.
And it's entirely possible to complete the major Dylan events while having Ellie kiss Julia, which is what happens in
Mamonetti's
walkthrough. Which means that not only does Dylan score no goals, but his team loses.
So what would Ellie gain from an intimate relationship with someone who might not even be that successful? And that she's need to keep secret?. She doesn't need dick - not only do we already know she has a vibrator for that, but even then, she's at least dating Aaron, which she doesn't need to keep secret, and also furthers her goals.