Although he's been really obvious up to this point I guess it's a little understandable that the fl wouldn't realize he has feelings for her given it's happened so quickly, like they barely know each other at all.
As far as liking him back other than him being hot and liking her, there's not much reason for her to do so, is there? He's so damn childish, whether it's his initially kidnapping her to have a convenient healing machine or his going around and smashing up his own shit because she didn't instantly fall in love with him.