A's relationship with B is generally dependent on A's relationship with C, or B's relationship with C. Everything is relative, and we're essentially dealing with human relationships, where black and white are not always black and white but rather some assorted shade of grey (possibly even 50 shades).
The hint system works (for me, anyway). Not perfectly, but close enough. Chill out, go with the flow, relax, and all will work out in the end. Don't try to push the system, just follow the hints and be a little flexible time-wise (i.e., seeing whosits at 6PM in the sauna may really work out to starting there at 5PM and it works its way into 6PM).
The way things are developing with Amy, Dani, Hikari and Mayan are interesting.