Yeh, not a fan of Ken and Haruka as a couple at all, he's too easy-going and doesn't really understand how his words might affect girls like Haruka who have a crush on him. I hope Wataru grows up to be more mature, think he's a better match for her.
Yeah, it really needed to be addressed, im pretty sure ken is just leading her on at this point and he really needs to let her down easy. She can't get over him if he doesn't give her a proper answer.