A few tips for beginners...

• It is possible to love more than one person at a time. Love is not a resource that needs to be carefully allocated. It is an emotion which can be felt completely, over and over again, without ever running out.
  
• Following rules does not make you moral, it makes you lawful. Morality requires the ability to decide right and wrong for yourself based on valid reasoning - not on doing something because 'you are supposed to'.
• If you care enough about someone to interfere in their life (for their own good of course), at least take the time to understand what you are interfering in. Ignorance is dangerous at the best of time, but when wielded with absolute conviction it is nothing short of devastating.