Evidently it can. You are talking about closeness in a sexual context. In that you are correct. They had sex before the MC even knew anything about Klaus. And of course he had always 'loved' her. But that is not all there is to 'closeness'. The anger he feels and the determination he has to both avenge her and to relieve Haley's anxieties are a direct result of the Klaus revelation. So, it has brought them together more deeply on other levels that sex.
Look, I get it that you didn't like 'the reveal'. Neither did I. Who would? And neither did the MC, but he didn't abandon Haley because of it, and neither have I.
You may never agree, and that's okay. Differences of opinion are inevitable. But mine is that Klaus made the story deeper, more interesting, and better. I always empathized with Haley's character. The developers are good at that. But after Klaus I found myself even more drawn to her character.
But that's just me.
So don't misunderstand other than the notion that this could happen without the MC noticing that his twin was experiencing a massive traumatic experience and finding out why, I have no problem with the reveal or how it fits into the story.
My comment simply reflects that these two having grown up together from birth. Bonding as
ONLY twins can who after acknowledging and committing their lives and eternal love to each other. The notion that somehow the MC becomes "more involved emotionally" when he learns of her abuse, simply fails to understand their existing level of emotional involvement.
While she didn't initially provide details, she did tell the MC about Klaus. He then set about getting her sorted out. He told her that she wasn't going to like what he wanted her to do but that he was doing it because he loved her. However uncomfortable she may have been, she never lashed out at him. They didn't become more emotionally involved, rather we witness the strength of their existing love and relationship.
In fact my view is that, from the very beginning of this story, their emotional involvement was already as deep and complete as possible. The story is about how they come to deal with this forbidden bond that transcends social norms and cope with the realization that it's the two of them together forever come what may no matter what, and they find that before she tells the MC about Klaus.
Dealing with this may demonstrate his commitment to Haley, but that commitment was already there, and had been long before either one of them were willing to acknowledge it to each other (although Haley knew it and was seeking a way to get him to see it before this story began).
