i liked this game a lot! i found no difficulty in finishing in the thirty days!
for those of you who are still stuck, here's a few tips:
-focus on one person. pick from the start and ONLY TALK TO THEM.
-only work enough to cover the cost of gifts and dates. the best job to make money at is the matching game. it has the highest most reliable payout.
-before going on any dates, finish each persons dialogue to learn their full story.
-each person has five (5) items that they like. give them at least one of each of the five they love. no two people have the same favorite items. each person also has their own favorite drink on dates. the color drink corresponds to the color of their door. the items and drink colors are as follows:
-shoes with bows
-blue star wristband
-white winged eye-patch
-blue wind catcher
-black/purple face mask (looks a bit like goggles)
-black/red heart wristband
-can of purple spray paint
-deck of cards
other than that, if you go on one date and get through the story line with a person you get their ok ending.
if you finish the story line, go on 4 dates, and have at least 1000 exp with one person, you get the best ending. i hope this helps! :)