Yeah… It’s real hard to see Chitoge struggle with this, to be honest. They’re clearly in love with each other, but they still cling stubbornly to those early perceptions of each other, keeping them from admitting it to themselves and each other. So much friction between them when they should be thick as thieves. It’ll still take a bit more time for them to work their shit out.
Next comes the final arc of the first season of the anime- the class play. And things conspire once again to put Raku and Chitoge together, despite everything seeming to go another way.
Really, don’t ever get your hopes up about Raku and Kosaki. You’ll just hurt yourself as they waste chances with each other while him and Chitoge keep working their shit out.