I would not be so sure about that, esp. on the more positive paths and with high bromance scores. Edwin knows(!) that Ian is different from his usual behaviour when it comes to Vicki. That something along those lines might be in the cards on some paths is hinted at with what happens when we as the MC push Ian towards some introspection and planning for the future.We need to think in terms of how these characters are written and the relationships between them. As I see it, knowing what he knows about Ian, the MC would NEVER approve of Ian having sex with her,
It is not his disco bunny Ian has with him these last nights, but Alice, who is also older than him.