According to me I think that Kai do 爱情 Hilary and she too I can prove my point 由 several reason :-
1) When they met in the 6th episode of V-force Hilary 说 to Tyson to introduce her to Kai.
2) When for the first time they meet Kai was quite which he does never means he want to know about her.
3) When Hilary saw the 照片 of Kai she say him cute.
4) When every one was against Hilary and Tyson tore the page Kai was only one who supported her and accept in his team.
5) In the episode 15th of V-force whe nobody was 展示 her their big-beast she begged every one but touched Kai only.
6) Normally...