Does Shirayuki realise Obi loves her? She's a warm, friendly, and trusting person, despite what happened in her homeland, but in the end she's highly career and research oriented, so she might have some difficulties analysing people.
I felt this particular Ryuu's case was kind of overdramatised, but on the other hand, it does fit his personality. I'm just afraid he will fall for Shirayuki as well (I don't mean I'd have thought for a moment this particular case would have been about confessing to her, like Obi apparently believed). Or did he have someone else already? I can't remember.