/jp/ - Otaku Culture

I'm a bit confused by a line in Flyable Heart:
こんな顔されるなんて思ってなかったんだけどな。
(MC's internal monologue)

Then, after the MC says to himself 「なんで・・・・・・なんだろう。」, you get the choice of which girl's direction to look in.

About the best I can do is:
That this sort of face will be made, I wasn't thinking about it...
Why... why, I wonder.

But that hardly makes any sense. Based on the choice which follows after he says these lines, it seems as if he's asking himself which girl he should look at, but I can't figure out how the lines produce that meaning.