Even though he’s the protagonist, there’s very little we actually know about Allen. We don’t know his full background, nor the principles he acts according to – or his lady affairs, though I don’t think he remained innocent under Cross’ “care“ (whoa, that sounds so wrong).
I think we got a hint regarding his love life. Yes, it seems that Ghost Arc did have its function. Remember this guy?
In earlier chapters, Komui explains that Komurins posses his personality.
So this means that Komurin is basically a dublication of Komui. And then I recalled this scene.
Allen seduced Komurin without much effort. (How Komurin blushed without blood is beyond me.) And since Komurin is a dublication of Komui, Allen should be able to pull it off with Komui. A hopelessly innocent person as the fandom prefers to depict him can’t manipulate people (or robots) like this. Allen knew exactly what he was doing, this wasn’t unintentional. It makes me wonder just how many people he seduced so far.
May's Blog 