Ah, so this is why you unliked my post
Actually there is no proof that Dylan likes more mature ladies, he just likes Sophia and Alyssa, he enjoyed the kiss from Ellie and Dylan is probably like most guys, he likes mature and same age group. Dylan is like most guys, he just wants the boobs and to cum.
There is no bonus storyline, people need to stop saying that and realize there is only one main storyline, all this so-called bonus stuff is part of Sophia's corruption, which is the main story.
Just like the Dylan/Ellie stuff is as well and that is not "unsubstantiated speculative crap" because you don't like it.
The Dylan/Ellie stuff we saw is changing Ellie's opinion of Dylan and will mean she won't run off and tell Liam after she catches Sophia/Dylan together. I might be wrong on how it exactly plays out, as L&P might do it differently but am pretty sure am on the right track with what we saw on the Dylan/Ellie path. Either way, there is a purpose to everything L&P does and the Dylan/Ellie computer scene and kiss on the cheek is leading to something, I think my theory on where it leading could be accurate or close to what actually happens.
EDIT* so after I posted this, I saw Old Dog post showing L&P calling it a bonus storyline, I still say the same thing, there no bonus storyline and its part of the main story. L&P doesn't do anything for no reason, so there must be a reason for this so-called bonus storyline.
I did say I didn't know where the Dylan/Emma thing going, also, it's possible Sophia could shut down the tasks after doing first 2 and still send Dylan to boarding school, sure I saw something about an option to possible end the tasks is coming up.