
I haven't really read the future chapters so I don't really know how Ash acts; but, from what I have read already, I believe that Ash is just trying to open new doors for Lyle, who has never known these doors to exist before. In Lyle's past relationships he never got to express himself, never even thought about it. Because of that he has no idea what other doors exist that he may or may not like, or how to explore them.
in his own way, Ash is trying to open those doors for him. Is Ash being a little to pushy? Yes, a little; but, with Lyle that's not really a bad thing since Lyle will never take the jump himeself, unless he's nudged a little, and find out if he likes somehing or not. Hopefully this all makes sense and doesn't sound like total crap that is completely off track :,)

So did Won ever like the brother? Is he dating MC as a substitute? I need to know; because, the comments are soo vague :,)

Spoiler alert!!!
Since you're asking for spoilers I'll you.
Won used MC's bro as a substitute since he couldn't be near him. The MC was a minor at that time, but he too liked Won but couldn't figure it out. Later he lost his memory and stuff due to an accident caused by this brother that's why he has no memory of Won. It's really messed up to be honest but the characters and their trauma are complex so due try reading it. I won't blame you for not finishing it. Hope this info helps.

Spoiler alert!!!
Since you're asking for spoilers I'll give you some info.
Won used MC's bro as a substitute since he couldn't be near him. The MC was a minor at that time, but he too liked Won but couldn't figure it out. Later he lost his memory and stuff due to an accident caused by this brother that's why he has no memory of Won. It's really messed up to be honest but the characters and their trauma are complex so due try reading it. I won't blame you for not finishing it. Hope this info helps.
The comments totally scared me, but there was nothing to be worried about! Rou is absolutely head over heels for Yoshino. Other then his stupid denseness and off-hand comment, the story was cute and adorable and def a nice read if you read the 1st Vol and want some more insight on Rou's point of view!