So the other voice actress DID have feelings for her colleague, it wasn't an act at all ! Oh well, Ataru is in a hopeless situation as well, maybe they can help each other heal a little.
@kojiro481 Well, it was shown that she had the feelings for her voice acting partner not long after they were introduced, and then it was shown again one or two times. And yeah she did sound confident, when she said her friend won't let her have her way with her, but it also doesn't look like she has already confessed.