Ayumu X Hayate X Hina 's relationship is complicating
Spoiler for big enough spoiler from the manga:
Spoiler for beyond this point it's NOT my fault on how you take the news:
Spoiler for Nobody can resist the lure of the spoiler tags huh? :D:
Ayumu likes Hayate.
Hina agrees to help her get Hayate.
Hayate feels that he's can't have a girlfriend
YET.
Hina falls for Hayate.
(NOT through any cheesy stunt 
It was really romantic)
Hina now doesn't know whether to continue with her promise, or go with her feelings.
Ayumu, still looks to Hina for help
Hayate, without knowing, isn't making the decision any easy for her