1. Love doesn't need rhyme nor reason to flourish, it can just spontaneously conjure from thin air and leave a trail of destruction in its path.
2. Your friend will be OK with you striking up a relationship with the person he loves if you just explain that the love you feel is more pure.
3. Everything will reset the following week.
I pulled this move and am lucky that I remained friends with everybody involved. However, I can't speak to those other men and women out there who decided to go forth with their forbidden relationships after seeing this particular episode.
Where's the falling out? Where's the heartbreak? How could Screech ever trust Zack again? That was a large lesson I learned after separating myself from the obvious attempt in judgment from the writers: don't be a dick to your best friend, even if he's a little garbage kid name Screech.
Women are one-dimensional beings
Women really can't seem to catch a break in TV... or in real life, for that matter. If they weren't nagging their husbands or boyfriends about inconsequential topics, they were pursuing any number of valuable interests, including: fashion, coffee, or assisting an ornery man.