If it's 5/5 or 4/4 for relationship (first heart) or desire (second heart) - it means that there is nothing else yet for this character in terms of story and progression. The last one where there is 66/132 it's the h-scenes, from each interaction event there are few of this (one with teasing, one with grope, one with hj for example). You should just look for them, examine character's schedule. Don't forget to buy 'booty shorts and tank top' and wear it outside of school, openes up more opportunities due to all possible statuses.
Thanks, will be fixed next version.
Thanks again! Also will be fixed next version, for now, you can just hold click between the buttons and scroll that way.